From Ella.Batchelor at nottingham.ac.uk Mon Mar 3 08:25:24 2025 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor) Date: Mon, 3 Mar 2025 08:25:24 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c: 03/03/25) Message-ID: Monday 3rd March at 1pm, A113 CAPT ? Particle Cosmology and Gravity Seminar Tuomas Tenkanen (Helsinki) What's still hot in Electroweak phase transitions? A perspective from three spatial dimensions over the past decade. Motivated by their prospects to produce potentially observable primordial gravitational wave background, as well as to provide a viable mechanism for baryogenesis, understanding the physics of Electroweak phase transitions has been a hot topic for a long time. In this talk, I will present developments from the past decade that have culminated in: i) automating the required dimensionally reduced, thermal effective field theory (EFT) descriptions; ii) gaining an intuitive understanding of the underlying 'supersoft' mass scale above the non-perturbative scale of confinement for scalar field-driven phase transitions; iii) including thermal loop corrections up to and including three loops; and iv) building effective perturbative descriptions for bubble nucleation and sphaleron rates in the thermal plasma. Finally, I will envision future directions for studying Beyond the Standard Model theories at high temperatures, and high-loop-order perturbative calculations beyond simple EFTs built upon high-temperature expansions. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d Monday 3rd March at 3pm, A113 CAPT ? Theoretical Physics Student Seminar Benjamin Muntz On Frame Covariance and Field Space Geometry --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee --- Wednesday 5th March at 3.45pm, C4 Physics ? Astronomy Seminar Dr Jon Davies (Liverpool John Moores) The origins of galaxy diversity in cosmological simulations In the latest generation of cosmological simulations, the properties of Milky Way-like galaxies are shaped by how they interact with the gas reservoirs in their host haloes - the circumgalactic medium (CGM). In my talk I will explore how the galaxies in these simulations transform the content and properties of their CGM through feedback, and in turn, how the properties of the CGM determine the future evolution of galaxies. In particular, I will focus on how the fates of Milky Way-like galaxies are set by the growth histories of their central supermassive black holes (SMBHs); the growth of an over-massive SMBH causes the majority of the CGM to be expelled by AGN feedback, preventing the ?refuelling? of the galaxy and leading to quenching, whilst the growth of an under-massive SMBH allows star formation to continue. These differences in SMBH growth therefore play a crucial role in establishing the diversity of galaxy properties in haloes of similar mass in these simulations, and so I will devote the rest of my talk to exploring why these differences exist. I will present the results of several controlled galaxy formation experiments, performed with the EAGLE model using carefully modified initial conditions, that have given us new insight into how SMBH growth is shaped by the assembly history of the host galaxy and halo, and revealed the essential role that galaxy mergers play in producing the star formation bimodality in cosmological simulations. --- Thursday 6th March at 1pm, A113 CAPT ? Astronomy Lunch Talk James Bolton Exploring the high redshift intergalactic medium in the ELT era I?ll talk about the ELT (first light in 2028) and highlight some of the IGM / reionisation era science that will be possible with it. Thursday 6th March at 3pm, A113 CAPT ? Particle Cosmology Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- If you have any events/visitors you would like included in next week?s bulletin, please let me know. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DB8C14.39CAD3F0] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... 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URL: From Jesse.Golden-Marx at nottingham.ac.uk Mon Mar 3 13:38:16 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Mon, 3 Mar 2025 13:38:16 +0000 Subject: [Astro] [CAPT] Seminar 5/3: Dr. Jon Davies (Liverpool John Moores) Message-ID: Hi Everyone, I just wanted to remind you all about this week's seminar with Dr. Jon Davies from Liverpool John Moores who will be telling us about his simulation research on the formation of Milky Way like galaxies (see title and abstract below). Jon will be arriving in the later morning on Wednesday and then visiting the department on Thursday morning. So, if you're interested in chatting with him while he's visiting, please let us know. Following the seminar, we will have wine and cheese. Timings are as usual: - lunch at Lakeside, leaving CAPT ~13:00 (subsidized for a limited number of students -- let me know before the end of the day tomorrow) - meet the speaker for postgrads at 15:00, finishing at 15:30 - seminar at 15:45 in C4 - post-seminar wine and cheese at 16:45 This seminar will be conducted in person only. Cheers, Jesse and Luke Title: The origins of galaxy diversity in cosmological simulations Abstract: In the latest generation of cosmological simulations, the properties of Milky Way-like galaxies are shaped by how they interact with the gas reservoirs in their host haloes - the circumgalactic medium (CGM). In my talk I will explore how the galaxies in these simulations transform the content and properties of their CGM through feedback, and in turn, how the properties of the CGM determine the future evolution of galaxies. In particular, I will focus on how the fates of Milky Way-like galaxies are set by the growth histories of their central supermassive black holes (SMBHs); the growth of an over-massive SMBH causes the majority of the CGM to be expelled by AGN feedback, preventing the ?refuelling? of the galaxy and leading to quenching, whilst the growth of an under-massive SMBH allows star formation to continue. These differences in SMBH growth therefore play a crucial role in establishing the diversity of galaxy properties in haloes of similar mass in these simulations, and so I will devote the rest of my talk to exploring why these differences exist. I will present the results of several controlled galaxy formation experiments, performed with the EAGLE model using carefully modified initial conditions, that have given us new insight into how SMBH growth is shaped by the assembly history of the host galaxy and halo, and revealed the essential role that galaxy mergers play in producing the star formation bimodality in cosmological simulations. Jesse Golden-Marx, Ph.D. Senior Research Associate Centre for Astronomy & Particle Theory School of Physics & Astronomy University of Nottingham University Park, Nottingham, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Jesse.Golden-Marx at nottingham.ac.uk Tue Mar 4 20:18:30 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Tue, 4 Mar 2025 20:18:30 +0000 Subject: [Astro] Seminar 5/3: Dr. Jon Davies (Liverpool John Moores) In-Reply-To: References: Message-ID: Hi Everyone, I'm still looking for some people (faculty, students, or postdocs) to join for lunch with our seminar speaker, Jon Davies, tomorrow. We'll be going to Lakeside Arts at ~1pm. If you're interested in joining, please let me know! In peace, Jesse ________________________________ From: Jesse Golden-Marx (staff) Sent: Monday, March 3, 2025 1:38 PM To: capt at nottingham.ac.uk Subject: Seminar 5/3: Dr. Jon Davies (Liverpool John Moores) Hi Everyone, I just wanted to remind you all about this week's seminar with Dr. Jon Davies from Liverpool John Moores who will be telling us about his simulation research on the formation of Milky Way like galaxies (see title and abstract below). Jon will be arriving in the later morning on Wednesday and then visiting the department on Thursday morning. So, if you're interested in chatting with him while he's visiting, please let us know. Following the seminar, we will have wine and cheese. Timings are as usual: - lunch at Lakeside, leaving CAPT ~13:00 (subsidized for a limited number of students -- let me know before the end of the day tomorrow) - meet the speaker for postgrads at 15:00, finishing at 15:30 - seminar at 15:45 in C4 - post-seminar wine and cheese at 16:45 This seminar will be conducted in person only. Cheers, Jesse and Luke Title: The origins of galaxy diversity in cosmological simulations Abstract: In the latest generation of cosmological simulations, the properties of Milky Way-like galaxies are shaped by how they interact with the gas reservoirs in their host haloes - the circumgalactic medium (CGM). In my talk I will explore how the galaxies in these simulations transform the content and properties of their CGM through feedback, and in turn, how the properties of the CGM determine the future evolution of galaxies. In particular, I will focus on how the fates of Milky Way-like galaxies are set by the growth histories of their central supermassive black holes (SMBHs); the growth of an over-massive SMBH causes the majority of the CGM to be expelled by AGN feedback, preventing the ?refuelling? of the galaxy and leading to quenching, whilst the growth of an under-massive SMBH allows star formation to continue. These differences in SMBH growth therefore play a crucial role in establishing the diversity of galaxy properties in haloes of similar mass in these simulations, and so I will devote the rest of my talk to exploring why these differences exist. I will present the results of several controlled galaxy formation experiments, performed with the EAGLE model using carefully modified initial conditions, that have given us new insight into how SMBH growth is shaped by the assembly history of the host galaxy and halo, and revealed the essential role that galaxy mergers play in producing the star formation bimodality in cosmological simulations. Jesse Golden-Marx, Ph.D. Senior Research Associate Centre for Astronomy & Particle Theory School of Physics & Astronomy University of Nottingham University Park, Nottingham, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: From Joseph.Butler at nottingham.ac.uk Thu Mar 6 09:00:00 2025 From: Joseph.Butler at nottingham.ac.uk (Joseph Butler) Date: Thu, 6 Mar 2025 09:00:00 +0000 Subject: [Astro] Lunch talk Message-ID: Hi everyone, Reminder of Jamie's lunch talk today at 1pm in A113. Thanks, Joe -------------- next part -------------- An HTML attachment was scrubbed... URL: From Alfonso.Aragon at nottingham.ac.uk Fri Mar 7 09:39:28 2025 From: Alfonso.Aragon at nottingham.ac.uk (Alfonso Aragon-Salamanca) Date: Fri, 7 Mar 2025 09:39:28 +0000 Subject: [Astro] [CAPT] Blackboard on A113 Message-ID: Dear all, If you use the blackboard in A113, please try to minimise the amount of dust generated (I know the chalk is classed as "dust-free", but it still produces significant amounts of dust). Dust not only creates additional work for our cleaner, but it may be harmful for people with respiratory problems such as asthma. It is also difficult to remove from clothes. If you use the blackboard, it is important that: 1) The erasers are cleaned (outdoors, at the back of the building) regularly, to reduce the chalk dust they accumulate. If you use the blackboard, please clean the erasers. Users may consider a "rota" to ensure this happens a few times per week. 2) Chalk and erasers are placed in the box provided during and after use, and NOT on the tables/desks/chairs. People who attend seminars in that room do not want to get their clothes ruined by chalk dust. And our cleaner doesn't need extra dusting. It the blackboard continues to cause problems of the nature mentioned above, it will be removed. Thank you for your understanding. Best wishes, Alfonso Alfonso Arag?n-Salamanca Professor of Astronomy School of Physics and Astronomy University of Nottingham Room B106b, Centre for Astronomy and Particle Theory University Park Nottingham, NG7 2RD, UK +44 (0) 115 95 16230 | alfonso.aragon at nottingham.ac.uk URL: http://nottingham.ac.uk/physics/people/alfonso.aragon General teaching enquiries physics-teaching at nottingham.ac.uk -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Sayyed.Rassouli at nottingham.ac.uk Fri Mar 7 11:07:15 2025 From: Sayyed.Rassouli at nottingham.ac.uk (Sayyed Rassouli) Date: Fri, 7 Mar 2025 11:07:15 +0000 Subject: [Astro] [CAPT] Blackboard on A113 In-Reply-To: References: Message-ID: Hi All, I am the PhD student who made the blackboard possible. I fully agree with Alfonso?s points. I will try to establish a regular cleaning cycle for the erasers (which can be washed) to help reduce the spread of chalk dust. If she?s comfortable, I may also ask Margaret to clean them weekly. Perhaps we could also post a brief ?housekeeping? note near the board for visitors, so they know to keep the chalk and erasers off tables and chairs. I understand the concerns around chalk dust?particularly for those with respiratory sensitivities?but blackboards do come with the territory of a bit of mess. While I appreciate the reminder to be mindful, the idea that chalk dust is ruining clothes might be an overreach: if you?re working with or around a chalkboard, some dust exposure is almost inevitable. Best, Farbod From: Particles on behalf of Alfonso Aragon-Salamanca Date: Friday, 7 March 2025 at 09:41 To: capt at nottingham.ac.uk Cc: Alfonso Aragon-salamanca (staff) Subject: [Particles] [CAPT] Blackboard on A113 Dear all, If you use the blackboard in A113, please try to minimise the amount of dust generated (I know the chalk is classed as ?dust-free?, but it still produces significant amounts of dust). Dust not only creates additional work for our cleaner, but it may be harmful for people with respiratory problems such as asthma. It is also difficult to remove from clothes. If you use the blackboard, it is important that: The erasers are cleaned (outdoors, at the back of the building) regularly, to reduce the chalk dust they accumulate. If you use the blackboard, please clean the erasers. Users may consider a ?rota? to ensure this happens a few times per week. Chalk and erasers are placed in the box provided during and after use, and NOT on the tables/desks/chairs. People who attend seminars in that room do not want to get their clothes ruined by chalk dust. And our cleaner doesn?t need extra dusting. It the blackboard continues to cause problems of the nature mentioned above, it will be removed. Thank you for your understanding. Best wishes, Alfonso Alfonso Arag?n-Salamanca Professor of Astronomy School of Physics and Astronomy University of Nottingham Room B106b, Centre for Astronomy and Particle Theory University Park Nottingham, NG7 2RD, UK +44 (0) 115 95 16230 | alfonso.aragon at nottingham.ac.uk URL: http://nottingham.ac.uk/physics/people/alfonso.aragon General teaching enquiries physics-teaching at nottingham.ac.uk -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Jesse.Golden-Marx at nottingham.ac.uk Fri Mar 7 16:05:25 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Fri, 7 Mar 2025 16:05:25 +0000 Subject: [Astro] [CAPT] Cake! Message-ID: Hi Everyone, We have cake in the lobby! I've made vegan peanut butter cookies (some with chocolate) and oatmeal raisin (and other dried fruits)! Hope you all enjoy! Plus you can come meet my twin brother! Cheers, Jesse -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Swagat.Mishra at nottingham.ac.uk Mon Mar 10 07:03:10 2025 From: Swagat.Mishra at nottingham.ac.uk (Swagat Mishra) Date: Mon, 10 Mar 2025 07:03:10 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar this Week: Diksha Jain from DAMTP, Cambridge Message-ID: Dear All, We have a seminar this week whose details are provided below - ----------------------------------------- Speaker: Diksha Jain (DAMTP, Cambridge) Seminar date: March 11th, Tuesday, 1 pm UK time Venue: Seminar Room A 113 (Cripps North Building, CAPT) Title: The S-matrix and boundary correlators in flat space. Abstract: We consider the path integral of a quantum field theory in Minkowski spacetime with fixed boundary values (for the elementary fields) on asymptotic boundaries. We define and study the corresponding boundary correlation functions obtained by taking derivatives of this path integral with respect to the boundary values. The S-matrix of the QFT can be extracted directly from these boundary correlation functions after smearing. We interpret this relation in terms of coherent state quantization and derive the constraints on the path-integral as a function of boundary values that follow from the unitarity of the S-matrix. We then study the locality structure of boundary correlation functions. In the massive case, we find that the boundary correlation functions for generic locations of boundary points are dominated by a saddle point which has the interpretation of particles scattering in a small elevator in the bulk, where the location of the elevator is determined dynamically, and the S-matrix can be recovered after stripping off some dynamically determined but non-local ``renormalization'' factors. In the massless case, we find that while the boundary correlation functions are generically analytic as a function on the whole manifold of locations of boundary points, they have special singularities on a sub-manifold, points on which correspond to light-like scattering in the bulk. We completely characterize this singular scattering sub-manifold, and find that the corresponding residues of the boundary correlations at these singularities are precisely given by S-matrices. This analysis parallels the analysis of bulk-point singularities in AdS/CFT and generalizes it to the case of multi-bulk point singularities. Reference: https://inspirehep.net/literature/2719839 -------------------------------------------------- Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d List of upcoming Seminars: 18th March: Ivano Basile (Max Planck) 25th March : Pete Millington (Manchester) 01st April: Anna Kormu (Helsinki) 08th April: Tales of Gravity Conference 15th April: TBA 22nd April: Isobel Romero (Cambridge) 29th April: Daniel Panizo (Kyoto U) ---------------------------------------------------------------------- With Regards, -Elisa & Swagat Swagat Saurav Mishra, Postdoctoral Research Associate ? Particle Cosmology Group, Centre for Astronomy and Particle Theory, University of Nottingham, Nottingham NG7 2RD, UK. Website: https://swagatam18.wordpress.com/ Research Link:https://inspirehep.net/authors/1517353 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Alfonso.Aragon at nottingham.ac.uk Mon Mar 10 08:08:13 2025 From: Alfonso.Aragon at nottingham.ac.uk (Alfonso Aragon-Salamanca) Date: Mon, 10 Mar 2025 08:08:13 +0000 Subject: [Astro] Fw: NAM2025 Abstract Submission - Illuminating the Faintest Galaxies: Dwarf Galaxies In-Reply-To: References: Message-ID: Dear all, See announcem3nt below. Best wishes, Alfonso Alfonso Arag?n-Salamanca Professor of Astronomy University of Nottingham ________________________________ -- Dear all, We are excited to announce a parallel session at the upcoming UK National Astronomy Meeting (NAM) on July 7th-11th 2025, at Durham University: Illuminating the Faintest Galaxies: Dwarf Galaxies as Probes of Dark Matter, Feedback, and the First Stars We invite you to submit abstracts by March 30th, 5pm GMT, and encourage you to share this announcement with anyone who might be interested. While we expect many attendees to join us in person, NAM will be fully hybrid this year, welcoming participation from researchers worldwide. The session will feature two blocks, with the schedule to be confirmed. It aims to foster interdisciplinary discussion and collaboration between observers and simulators working on dwarf galaxies ? from the classical to the ultra-faint regime ? which serve as critical probes of dark matter, physical processes that drive galaxy evolution, and the early Universe. Further details and links are provided below. We look forward to seeing you this summer in Durham! Best wishes, The Organizers Alejandra Aguirre-Santaella, Shaun Brown, Ting-Yun (Sunny) Cheng, Jessica Doppel, Isabel Santos-Santos, Joaquin Sureda (Durham University) ######################## Useful links: Abstract submission (deadline March 30th): https://conference.astro.dur.ac.uk/event/7/abstracts/ Registration for NAM (deadline June 20th): https://conference.astro.dur.ac.uk/event/7/page/20-participant-registration Parallel sessions programme: https://conference.astro.dur.ac.uk/event/7/program -- ** My working hours can be different from yours. Please do not feel obligated to response outside of your working hours. ** Dr Ting-Yun Cheng (Sunny) Postdoctoral Research Associate [She/Her] Personal Website Centre of Extragalactic Astronomy Durham University United Kingdom -------------- next part -------------- An HTML attachment was scrubbed... URL: From Benjamin.Muntz at nottingham.ac.uk Mon Mar 10 09:49:30 2025 From: Benjamin.Muntz at nottingham.ac.uk (Benjamin Muntz) Date: Mon, 10 Mar 2025 09:49:30 +0000 Subject: [Astro] [CAPT] [Ncog-people] Special seminar this week: Bruno Bento from IFT Madrid Message-ID: Dear all, This Thursday we have a special seminar by Bruno Bento, who will be visiting us from IFT Madrid. All staff and students are very welcome join. Note the unusual time as it takes place during what would be the student journal club. Speaker: Bruno Valexio Bento (IFT Madrid) Date: March 13th, Thursday, 3pm UK time Venue: CAPT A113 Title: Tests and exploitations of String Theory: From Dark Energy to Gravitational Waves Abstract: Although string theory is famously hard to connect with observations, a lot of work is currently done with the aim of both testing it and exploiting its features to address observational puzzles. For instance, the nature of Dark Energy is one of the current big questions in cosmology--within string theory it is intimately tied to the search for de Sitter vacua within its vast landscape of solutions. As an example of exploitation, I will outline a concrete and previously unexplored setup using Casimir energies on extra dimensions that are Riemann flat compact manifolds, where one can look for such de Sitter solutions. I will then turn to Gravitational Waves as probes of extra dimensions and discuss how common ingredients in string compactifications might be key to their observability. We will look at a simple example of a binary system source in the context of a warped braneworld scenario, where we can compare the signals sourced by localised and extended sources, and how these relate to fifth force constraints. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d Best regards, Benjamin -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 10 10:45:01 2025 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor) Date: Mon, 10 Mar 2025 10:45:01 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c 10-03-25) Message-ID: Monday 10th March at 3pm, A113 Physics ? Theoretical Physics Student Seminar Benjamin Muntz Geometric Amplitudes and the Swampland Distance Conjecture --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesday 11th March at 1pm, A113 Physics ? Particle Cosmology and Gravity Seminar Diksha Jain (DAMTP, Cambridge) The S-matrix and boundary correlators in flat space We consider the path integral of a quantum field theory in Minkowski spacetime with fixed boundary values (for the elementary fields) on asymptotic boundaries. We define and study the corresponding boundary correlation functions obtained by taking derivatives of this path integral with respect to the boundary values. The S-matrix of the QFT can be extracted directly from these boundary correlation functions after smearing. We interpret this relation in terms of coherent state quantization and derive the constraints on the path-integral as a function of boundary values that follow from the unitarity of the S-matrix. We then study the locality structure of boundary correlation functions. In the massive case, we find that the boundary correlation functions for generic locations of boundary points are dominated by a saddle point which has the interpretation of particles scattering in a small elevator in the bulk, where the location of the elevator is determined dynamically, and the S-matrix can be recovered after stripping off some dynamically determined but non-local ``renormalization'' factors. In the massless case, we find that while the boundary correlation functions are generically analytic as a function on the whole manifold of locations of boundary points, they have special singularities on a sub-manifold, points on which correspond to light-like scattering in the bulk. We completely characterize this singular scattering sub-manifold, and find that the corresponding residues of the boundary correlations at these singularities are precisely given by S-matrices. This analysis parallels the analysis of bulk-point singularities in AdS/CFT and generalizes it to the case of multi-bulk point singularities. Reference: https://inspirehep.net/literature/2719839 Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Wednesday 12th March at 3pm, C14 Physics ? Postgraduate Poster Competition The competition is sponsored by Cerca Magnetics. Posters will be judged by representatives from Cerca Magnetics and by staff from the school. Public viewing is from 3-4pm, with prize-giving at around 4pm. Wine, soft drinks and snacks will be provided. All staff and students are encouraged to attend. Wednesday 12th March at 3.45pm, C4 Physics ? Astronomy Seminar Dr Ting-Yun (Sunny) Cheng (Durham) Needles in Haystacks: Searching for Rare Primordial Systems with Deep Learning Primordial systems are unique archeological sites, commonly hidden within vast observational datasets yet offering invaluable insights into the story of our Universe. In this talk, I will present efforts in searching for two kinds of (potentially) primordial systems ? (1) low-metallicity dwarf galaxies and (2) Lyman limit deuterium systems ? using deep learning techniques. Extremely metal-poor dwarf galaxies (XMPs) are often regarded as the ?living fossils? of the earliest galaxies. These relics in the local Universe are ideal laboratories for studying the environmental conditions and chemical enrichment processes of early galaxies, as well as their impact on the evolution of early Universe. However, these systems are exceedingly rare; despite extensive searches over the past two decades, only a few hundred have been identified among millions of galaxy samples. This talk will present my recent work on developing an effective deep learning pipeline for identifying XMPs and report some exciting new discoveries from our ongoing search. The second part of the talk will introduce the search for Lyman limit deuterium systems in the Lyman-alpha forest of quasar spectra. Deuterium, primarily produced during Big Bang nucleosynthesis, has been largely consumed by stellar processes, making these systems rare and invaluable tracers for understanding the early Universe. In particular, Lyman limit deuterium systems are even rarer, with only three well-known systems in literature. I will present newly discovered systems from this search and our investigation of the temperature-density relation in these systems. Wednesday 12th March at 6pm, Arts Lecture Theatre ? Gravitational Waves and Human Choices ?3 (Free Concessions) Running time: 1 hour Join Professor Thomas Sotiriou, University of Nottingham and artist Matthew Woodham for this informative evening. Uncover the nature of gravitational waves: how ripples in spacetime reveal secrets about the Universe?s most violent events, challenge Einstein?s General Relativity, and even connect to human consciousness. Click here to book. --- Thursday 13th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Jen Feron The Peculiar Velocity Effect in 21cm Lightcones The 21cm brightness temperature during the Epoch of Reionisation is widely modelled using semi-numeric simulations. They are used for their computational speed and flexibility to test different astrophysical and cosmological parameters. However, these simulations often make assumptions in order to reduce computational costs. In particular the peculiar velocity effect is considered separately to lightcone effects. We highlight the importance of considering these effects in conjunction with each other. Especially when looking at the 1D power spectrum at large k scales. Here we see a boost in power of >300 % (>70%) in the Epoch of Reionisation (Cosmic Dawn), which is recoverable after the addition and removal of diffuse radio foregrounds and SKAO-like instrumental noise. Thursday 13th March at 3pm, A113 CAPT ? Special Seminar Bruno Valexio Bento (IFT Madrid) Tests and exploitations of String Theory: From Dark Energy to Gravitational Waves Although string theory is famously hard to connect with observations, a lot of work is currently done with the aim of both testing it and exploiting its features to address observational puzzles. For instance, the nature of Dark Energy is one of the current big questions in cosmology--within string theory it is intimately tied to the search for de Sitter vacua within its vast landscape of solutions. As an example of exploitation, I will outline a concrete and previously unexplored setup using Casimir energies on extra dimensions that are Riemann flat compact manifolds, where one can look for such de Sitter solutions. I will then turn to Gravitational Waves as probes of extra dimensions and discuss how common ingredients in string compactifications might be key to their observability. We will look at a simple example of a binary system source in the context of a warped braneworld scenario, where we can compare the signals sourced by localised and extended sources, and how these relate to fifth force constraints. --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- Visitors Ting-Yun (Sunny) Chen from Durham will be visiting on Wednesday and Thursday this week. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DB9197.7143A770] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 190221 bytes Desc: image001.png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Jesse.Golden-Marx at nottingham.ac.uk Mon Mar 10 10:56:20 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Mon, 10 Mar 2025 10:56:20 +0000 Subject: [Astro] [CAPT] Seminar 12/3: Sunny Cheng Message-ID: Hi Everyone, Our speaker for this week's seminar is Dr. Ting-Yun (Sunny) Cheng from Durham. Many of you likely know Sunny from when she did her PhD here working with Alfonso and Chris Conselice. Sunny is an expert on galaxy formation and morphology and machine learning. The abstract and title for her talk are provided below. Sunny will be arriving around 11:30am on Wednesday and visiting the department on both Wednesday and Thursday. We'll be having lunch with Sunny at 1pm at Lakeside Arts as part of the seminar on Wednesday. If you're interested in joining us, please let me know by tomorrow night. As usual, we can subsidize a few postgraduate students. Sunny will be sitting in A108 (at Luke's desk) while she's visiting. So, if you're interested in meeting with her, either let me know or come stop by the office. Kind regards, Jesse Title: Needles in Haystacks: Searching for Rare Primordial Systems with Deep Learning Abstract: Primordial systems are unique archeological sites, commonly hidden within vast observational datasets yet offering invaluable insights into the story of our Universe. In this talk, I will present efforts in searching for two kinds of (potentially) primordial systems ? (1) low-metallicity dwarf galaxies and (2) Lyman limit deuterium systems ? using deep learning techniques. Extremely metal-poor dwarf galaxies (XMPs) are often regarded as the ?living fossils? of the earliest galaxies. These relics in the local Universe are ideal laboratories for studying the environmental conditions and chemical enrichment processes of early galaxies, as well as their impact on the evolution of early Universe. However, these systems are exceedingly rare; despite extensive searches over the past two decades, only a few hundred have been identified among millions of galaxy samples. This talk will present my recent work on developing an effective deep learning pipeline for identifying XMPs and report some exciting new discoveries from our ongoing search. The second part of the talk will introduce the search for Lyman limit deuterium systems in the Lyman-alpha forest of quasar spectra. Deuterium, primarily produced during Big Bang nucleosynthesis, has been largely consumed by stellar processes, making these systems rare and invaluable tracers for understanding the early Universe. In particular, Lyman limit deuterium systems are even rarer, with only three well-known systems in literature. I will present newly discovered systems from this search and our investigation of the temperature-density relation in these systems. Jesse Golden-Marx, Ph.D. Senior Research Associate Centre for Astronomy & Particle Theory School of Physics & Astronomy University of Nottingham University Park, Nottingham, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Michael.Andersonjennings at nottingham.ac.uk Mon Mar 10 11:18:18 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Mon, 10 Mar 2025 11:18:18 +0000 Subject: [Astro] Lunch Talk Message-ID: Hi Everyone, This week's lunch talk will be given by Jen, on Thursday at 1pm in A113. Title and abstract are below. The Peculiar Velocity Effect in 21cm Lightcones The 21cm brightness temperature during the Epoch of Reionisation is widely modelled using semi-numeric simulations. They are used for their computational speed and flexibility to test different astrophysical and cosmological parameters. However, these simulations often make assumptions in order to reduce computational costs. In particular the peculiar velocity effect is considered separately to lightcone effects. We highlight the importance of considering these effects in conjunction with each other. Especially when looking at the 1D power spectrum at large k scales. Here we see a boost in power of >300 % (>70%) in the Epoch of Reionisation (Cosmic Dawn), which is recoverable after the addition and removal of diffuse radio foregrounds and SKAO-like instrumental noise. Thanks, Mikey Mikey Anderson Jennings Astronomy PhD Student University of Nottingham Centre for Astronomy and Particle Theory -------------- next part -------------- An HTML attachment was scrubbed... URL: From Jesse.Golden-Marx at nottingham.ac.uk Mon Mar 10 12:34:37 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Mon, 10 Mar 2025 12:34:37 +0000 Subject: [Astro] [CAPT] Seminar 12/3: Sunny Cheng In-Reply-To: References: Message-ID: Hi Everyone, One minor change to this week's seminar. Since there is the Physics department poster session this week, we will be starting our seminar at 16:00 following the poster session in C4 on Wednesday, followed by Wine and Cheese as usual. That way everyone can participate in both the poster session and get to hear Sunny's seminar. We will likely also adjust the time of the meeting with the postgraduates, but that time has not been finalized yet. Cheers, Jesse and Luke ________________________________ From: Jesse Golden-Marx (staff) Sent: Monday, March 10, 2025 10:56 AM To: capt at nottingham.ac.uk Subject: Seminar 12/3: Sunny Cheng Hi Everyone, Our speaker for this week's seminar is Dr. Ting-Yun (Sunny) Cheng from Durham. Many of you likely know Sunny from when she did her PhD here working with Alfonso and Chris Conselice. Sunny is an expert on galaxy formation and morphology and machine learning. The abstract and title for her talk are provided below. Sunny will be arriving around 11:30am on Wednesday and visiting the department on both Wednesday and Thursday. We'll be having lunch with Sunny at 1pm at Lakeside Arts as part of the seminar on Wednesday. If you're interested in joining us, please let me know by tomorrow night. As usual, we can subsidize a few postgraduate students. Sunny will be sitting in A108 (at Luke's desk) while she's visiting. So, if you're interested in meeting with her, either let me know or come stop by the office. Kind regards, Jesse Title: Needles in Haystacks: Searching for Rare Primordial Systems with Deep Learning Abstract: Primordial systems are unique archeological sites, commonly hidden within vast observational datasets yet offering invaluable insights into the story of our Universe. In this talk, I will present efforts in searching for two kinds of (potentially) primordial systems ? (1) low-metallicity dwarf galaxies and (2) Lyman limit deuterium systems ? using deep learning techniques. Extremely metal-poor dwarf galaxies (XMPs) are often regarded as the ?living fossils? of the earliest galaxies. These relics in the local Universe are ideal laboratories for studying the environmental conditions and chemical enrichment processes of early galaxies, as well as their impact on the evolution of early Universe. However, these systems are exceedingly rare; despite extensive searches over the past two decades, only a few hundred have been identified among millions of galaxy samples. This talk will present my recent work on developing an effective deep learning pipeline for identifying XMPs and report some exciting new discoveries from our ongoing search. The second part of the talk will introduce the search for Lyman limit deuterium systems in the Lyman-alpha forest of quasar spectra. Deuterium, primarily produced during Big Bang nucleosynthesis, has been largely consumed by stellar processes, making these systems rare and invaluable tracers for understanding the early Universe. In particular, Lyman limit deuterium systems are even rarer, with only three well-known systems in literature. I will present newly discovered systems from this search and our investigation of the temperature-density relation in these systems. Jesse Golden-Marx, Ph.D. Senior Research Associate Centre for Astronomy & Particle Theory School of Physics & Astronomy University of Nottingham University Park, Nottingham, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Jesse.Golden-Marx at nottingham.ac.uk Wed Mar 12 09:10:46 2025 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx) Date: Wed, 12 Mar 2025 09:10:46 +0000 Subject: [Astro] [CAPT] Seminar 12/3: Sunny Cheng In-Reply-To: References: Message-ID: Hi Everyone, I just wanted to remind you all about our seminar today from Sunny! We'll be starting at 4pm (after the poster session) in C4. Also, if anyone else wants to join for lunch (meeting in the lobby to go to Lakeside Arts at 1pm) just let me know. See you all later today! In peace, Jesse ________________________________ From: Jesse Golden-Marx (staff) Sent: Monday, March 10, 2025 12:34 PM To: capt at nottingham.ac.uk Subject: Re: Seminar 12/3: Sunny Cheng Hi Everyone, One minor change to this week's seminar. Since there is the Physics department poster session this week, we will be starting our seminar at 16:00 following the poster session in C4 on Wednesday, followed by Wine and Cheese as usual. That way everyone can participate in both the poster session and get to hear Sunny's seminar. We will likely also adjust the time of the meeting with the postgraduates, but that time has not been finalized yet. Cheers, Jesse and Luke ________________________________ From: Jesse Golden-Marx (staff) Sent: Monday, March 10, 2025 10:56 AM To: capt at nottingham.ac.uk Subject: Seminar 12/3: Sunny Cheng Hi Everyone, Our speaker for this week's seminar is Dr. Ting-Yun (Sunny) Cheng from Durham. Many of you likely know Sunny from when she did her PhD here working with Alfonso and Chris Conselice. Sunny is an expert on galaxy formation and morphology and machine learning. The abstract and title for her talk are provided below. Sunny will be arriving around 11:30am on Wednesday and visiting the department on both Wednesday and Thursday. We'll be having lunch with Sunny at 1pm at Lakeside Arts as part of the seminar on Wednesday. If you're interested in joining us, please let me know by tomorrow night. As usual, we can subsidize a few postgraduate students. Sunny will be sitting in A108 (at Luke's desk) while she's visiting. So, if you're interested in meeting with her, either let me know or come stop by the office. Kind regards, Jesse Title: Needles in Haystacks: Searching for Rare Primordial Systems with Deep Learning Abstract: Primordial systems are unique archeological sites, commonly hidden within vast observational datasets yet offering invaluable insights into the story of our Universe. In this talk, I will present efforts in searching for two kinds of (potentially) primordial systems ? (1) low-metallicity dwarf galaxies and (2) Lyman limit deuterium systems ? using deep learning techniques. Extremely metal-poor dwarf galaxies (XMPs) are often regarded as the ?living fossils? of the earliest galaxies. These relics in the local Universe are ideal laboratories for studying the environmental conditions and chemical enrichment processes of early galaxies, as well as their impact on the evolution of early Universe. However, these systems are exceedingly rare; despite extensive searches over the past two decades, only a few hundred have been identified among millions of galaxy samples. This talk will present my recent work on developing an effective deep learning pipeline for identifying XMPs and report some exciting new discoveries from our ongoing search. The second part of the talk will introduce the search for Lyman limit deuterium systems in the Lyman-alpha forest of quasar spectra. Deuterium, primarily produced during Big Bang nucleosynthesis, has been largely consumed by stellar processes, making these systems rare and invaluable tracers for understanding the early Universe. In particular, Lyman limit deuterium systems are even rarer, with only three well-known systems in literature. I will present newly discovered systems from this search and our investigation of the temperature-density relation in these systems. Jesse Golden-Marx, Ph.D. Senior Research Associate Centre for Astronomy & Particle Theory School of Physics & Astronomy University of Nottingham University Park, Nottingham, UK -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Michael.Andersonjennings at nottingham.ac.uk Thu Mar 13 09:32:31 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Thu, 13 Mar 2025 09:32:31 +0000 Subject: [Astro] Lunch Talk In-Reply-To: References: Message-ID: Hi everyone, Reminder of the lunch talk today at 1pm in A113. Thanks, Mikey Sent from Outlook for iOS ________________________________ From: Michael Anderson Jennings Sent: Monday, March 10, 2025 11:18:18 AM To: astro at nottingham.ac.uk Subject: Lunch Talk Hi Everyone, This week's lunch talk will be given by Jen, on Thursday at 1pm in A113. Title and abstract are below. The Peculiar Velocity Effect in 21cm Lightcones The 21cm brightness temperature during the Epoch of Reionisation is widely modelled using semi-numeric simulations. They are used for their computational speed and flexibility to test different astrophysical and cosmological parameters. However, these simulations often make assumptions in order to reduce computational costs. In particular the peculiar velocity effect is considered separately to lightcone effects. We highlight the importance of considering these effects in conjunction with each other. Especially when looking at the 1D power spectrum at large k scales. Here we see a boost in power of >300 % (>70%) in the Epoch of Reionisation (Cosmic Dawn), which is recoverable after the addition and removal of diffuse radio foregrounds and SKAO-like instrumental noise. Thanks, Mikey Mikey Anderson Jennings Astronomy PhD Student University of Nottingham Centre for Astronomy and Particle Theory -------------- next part -------------- An HTML attachment was scrubbed... URL: From Luke.Conaboy at nottingham.ac.uk Thu Mar 13 14:03:19 2025 From: Luke.Conaboy at nottingham.ac.uk (Luke Conaboy) Date: Thu, 13 Mar 2025 14:03:19 +0000 Subject: [Astro] [CAPT] Summer astronomy seminars Message-ID: <45E4B74A-AEFA-48EC-9C3C-A9181B04EA03@nottingham.ac.uk> Hi all, see below for the summer astronomy seminar schedule. The first seminar of the summer term is on 7th May, and are all in Physics C4 except for 4th Jun, which will be held in A113. Note that there are school colloquia on Wed 30th Apr and Wed 28th May. Best, Jesse and Luke == 7th May Jim Dunlop (Edinburgh) 14th May Clive Tadhunter (Sheffield) 21st May Sugata Kaviraj (Hertfordshire) 4th Jun Francesca Fragkoudi (Durham) *A113* 11th Jun Seoyoung Lyla Jung (Oxford) 18th Jun Elisabeth Sola (Cambridge) -------------- next part -------------- A non-text attachment was scrubbed... Name: poster_img.pdf Type: application/pdf Size: 7289811 bytes Desc: poster_img.pdf URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Benjamin.Muntz at nottingham.ac.uk Thu Mar 13 14:46:24 2025 From: Benjamin.Muntz at nottingham.ac.uk (Benjamin Muntz) Date: Thu, 13 Mar 2025 14:46:24 +0000 Subject: [Astro] [CAPT] [Ncog-people] Special seminar this week: Bruno Bento from IFT Madrid In-Reply-To: References: Message-ID: Dear all, A friendly reminder for today's seminar which is taking place in 15 minutes. Best regards, Benjamin Sent from Outlook for iOS ________________________________ From: Benjamin Muntz Sent: Monday, March 10, 2025 9:49 AM To: capt at nottingham.ac.uk ; maths-quantum-gravity-group at lists.nottingham.ac.uk ; O365-Gravity Laboratory ; ncog-people at nottingham.ac.uk ; O365-Particle Cosmology Student Journal Club Cc: Ella Batchelor (staff) ; Bruno Bento Subject: [Ncog-people] Special seminar this week: Bruno Bento from IFT Madrid Dear all, This Thursday we have a special seminar by Bruno Bento, who will be visiting us from IFT Madrid. All staff and students are very welcome join. Note the unusual time as it takes place during what would be the student journal club. Speaker: Bruno Valexio Bento (IFT Madrid) Date: March 13th, Thursday, 3pm UK time Venue: CAPT A113 Title: Tests and exploitations of String Theory: From Dark Energy to Gravitational Waves Abstract: Although string theory is famously hard to connect with observations, a lot of work is currently done with the aim of both testing it and exploiting its features to address observational puzzles. For instance, the nature of Dark Energy is one of the current big questions in cosmology--within string theory it is intimately tied to the search for de Sitter vacua within its vast landscape of solutions. As an example of exploitation, I will outline a concrete and previously unexplored setup using Casimir energies on extra dimensions that are Riemann flat compact manifolds, where one can look for such de Sitter solutions. I will then turn to Gravitational Waves as probes of extra dimensions and discuss how common ingredients in string compactifications might be key to their observability. We will look at a simple example of a binary system source in the context of a warped braneworld scenario, where we can compare the signals sourced by localised and extended sources, and how these relate to fifth force constraints. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d Best regards, Benjamin -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From julian.onions at nottingham.ac.uk Fri Mar 14 15:59:56 2025 From: julian.onions at nottingham.ac.uk (Julian Onions) Date: Fri, 14 Mar 2025 15:59:56 +0000 Subject: [Astro] [CAPT] Cake Message-ID: <54fd47db-50bf-40f1-a933-f326bfa13dd0@nottingham.ac.uk> Blueberry muffins and raspberry cupcakes (neither vegan - sorry!) Julian _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From phil.parry at nottingham.ac.uk Fri Mar 14 17:40:26 2025 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Fri, 14 Mar 2025 17:40:26 +0000 Subject: [Astro] [CAPT] Fwd: [UoN IT Service Status Page] - Unusual Spam Emails - New Incident In-Reply-To: References: Message-ID: <48bf583e-9335-4f2c-a25f-c710dfbcbee9@nottingham.ac.uk> Hi all, If you've received any strange emails today, this may explain why. Cheers Phil P -------- Forwarded Message -------- Subject: [UoN IT Service Status Page] - Unusual Spam Emails - New Incident Date: Fri, 14 Mar 2025 17:10:02 +0000 From: do-not-reply at statushub.io Reply-To: do-not-reply at statushub.io To: phil.parry at nottingham.ac.uk Uon it service status page New Incident Details Unusual Spam Emails - Monitoring Incident start: 14/03/2025 09:30AM GMT We are currently seeing high volumes unusual spam emails. The emails are in the form of replies to a request for a service, when no such request has been made. Analysis has shown these to be genuine emails from the service provider, and so far do not contain any malicious code. The only impact this is having currently is that the emails do cause confusion to staff who receive an email message staying that they have signed up to a service, when they have not done so. DTS are placing blocks on known email addresses associated with this current issue and are deleting them wherever possible, however it is plausible that the spammer will modify the nature of the emails to avoid this, which DTS will monitor and respond to. Although currently affecting over 1,600 users here at Nottingham, this issue is not unique to us, and the spammer has created an email distribution list that includes multiple universities. Monitoring will continue and further communications will be distributed to advise on how to handle related emails that you may receive. Services Affected ? [Email] Email Visit the incident page Visit the UoN IT Service Status Page hub page Unsubscribe from these alerts or Edit your subscription -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Elisa.Todarello at nottingham.ac.uk Mon Mar 17 08:30:00 2025 From: Elisa.Todarello at nottingham.ac.uk (Elisa Todarello) Date: Mon, 17 Mar 2025 08:30:00 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar this Week: Ivano Basile Message-ID: Dear All, We have a seminar this week whose details are provided below - ----------------------------------------- Speaker: Ivano Basile (Max-Planck-Institut f?r Astrophysik) Seminar date: March 18th, Tuesday, 1 pm UK time Venue: Seminar Room A 113 (Cripps North Building, CAPT) Title: Scale separation with strings attached Abstract: Empirical evidence famously indicates that we live in a universe with four extended spacetime dimensions and no "fifth forces" at low energies. Building realistic universes from string theory runs into several challenges, among which achieving both of these conditions simultaneously. This is known as the scale separation problem. I will present a novel approach to this end, concocting four-dimensional string vacua directly from the worldsheet formulation by analogy with the Banks-Zaks phenomenon in gauge theory. The resulting vacua are non-supersymmetric anti-de Sitter spacetimes with no intermediate effective description in higher dimensions. I will provide a working example in four dimensions as a proof of principle. -------------------------------------------------- Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d List of upcoming Seminars: 25th March : Pete Millington (Manchester) 01st April: Anna Kormu (Helsinki) 08th April: Tales of Gravity Conference 15th April: No seminar 22nd April: Isobel Romero (Cambridge) 29th April: Daniel Panizo (Kyoto U) ---------------------------------------------------------------------- With Regards, -Elisa & Swagat -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 17 08:37:06 2025 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor) Date: Mon, 17 Mar 2025 08:37:06 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c 17-03-25) Message-ID: Monday 17th March at 3pm, A113 Physics ? Theoretical Physics Student Seminar Drande Patogu O(d,d) Invariant Cosmology. --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesday 18th March at 1pm, A113 CAPT ? Particle Cosmology and Gravity Seminar Ivano Basile (Max-Planck Institut f?r Astrophysik) Scale separation with strings attached Empirical evidence famously indicates that we live in a universe with four extended spacetime dimensions and no "fifth forces" at low energies. Building realistic universes from string theory runs into several challenges, among which achieving both of these conditions simultaneously. This is known as the scale separation problem. I will present a novel approach to this end, concocting four-dimensional string vacua directly from the worldsheet formulation by analogy with the Banks-Zaks phenomenon in gauge theory. The resulting vacua are non-supersymmetric anti-de Sitter spacetimes with no intermediate effective description in higher dimensions. I will provide a working example in four dimensions as a proof of principle. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Wednesday 19th March at 3.45pm, C4 Physics ? Astronomy Seminar Jenny Carter (Leicester) SMILE! The first simultaneous images of the magnetopause and aurora The Solar wind Magnetosphere Ionosphere Link Explorer (SMILE) is a joint European Space Agency, Chinese Academy of Sciences mission due for launch in 2024 to explore coupling between the solar wind and Earth?s magnetosphere. SMILE will simultaneously monitor the movement of the magnetopause boundary and the subsequent response of the Northern Hemisphere ionosphere using two imaging cameras with offset field of views. The magnetopause is known to respond to changes in the incoming solar wind and interplanetary field, but this will be the first time that real-time images of this movement will be tracked. The high-latitude ionosphere is connected to near-Earth space via terrestrial magnetic field lines. Phenomena in the ionosphere, such as patches of aurora and precipitating particle signatures may be provoked as a direct result of processes at the dayside magnetopause. Alternatively, nightside or magnetotail processes lead to the large-scale phenomena such as a substorm. In this talk we will explore how SMILE will contribute to resolving the large outstanding questions regarding the Earth?s magnetosphere. We will examine the efforts of the global solar-terrestrial community to use multiple and varied experimental data, for example from radar, ground magnetometers, and all-sky auroral imagers in unravelling these questions at large, medium, and small temporal and spatial scales. Wednesday 19th March at 6pm, Djanogly Recital Hall ? Cosmic Titans Evening Talk: Black Holes Join Professor Ruth Gregory, Kings College London and artist Conrad Shawcross RA for this evening talk. Every black hole sings its own song in the darkness. Our esteemed speakers will explore the science and art of these elusive giants. Learn how we can observe their collisions in distant parts of the universe. Click here to book. --- Thursday 20th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Harley Brown Origins of Intracluster Light (in Simulations) Despite noteworthy differences between the simulation codes used (and a number of significant differences between the predictions of the two simulations), the result that roughly Milky-Way mass galaxies are the most significant contributors of ICL stars to halo mass ~ 1014 Msun galaxy clusters at z=0 appears broadly consistent between the two simulations. However, the two simulations do differ in regards to the predicted significance of secondary ICL formation channels - namely, extra-galactic star-formation in clusters ("in-situ" ICL). Thursday 20th March at 3pm, A113 CAPT ? Particle Cosmology Journal Club General Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- VISITORS Anthony Gonzalez (University of Florida) will be visiting the Astronomy group until Weds 19th March. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DB94BC.F9CA5170] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 190221 bytes Desc: image001.png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Luke.Conaboy at nottingham.ac.uk Mon Mar 17 09:59:09 2025 From: Luke.Conaboy at nottingham.ac.uk (Luke Conaboy) Date: Mon, 17 Mar 2025 09:59:09 +0000 Subject: [Astro] [CAPT] Astro seminar Wed 19th Mar 15:45 C4 -- Jenny Carter (Leicester) Message-ID: <24B7B7BE-B7B8-4DE5-BFC3-B6CC390D72B1@nottingham.ac.uk> Hi all, this week our seminar is given by Jenny Carter (Leicester), talking about SMILE, the magnetopause and aurora! The seminar will be in C4. This seminar will be the final of this term. Post-seminar refreshments will be wine and cheese. Timings are as usual: - lunch at Lakeside, leaving CAPT ~13:00 (subsidised for a limited number of students -- let me know before the end of the day tomorrow) - meet the speaker for postgrads at 15:00, finishing at 15:30 - seminar at 15:45 in C5/C4 - post-seminar wine and cheese at 16:45 This seminar will be conducted in person only. Best, Jesse and Luke == SMILE! The first simultaneous images of the magnetopause and aurora The Solar wind Magnetosphere Ionosphere Link Explorer (SMILE) is a joint European Space Agency, Chinese Academy of Sciences mission due for launch in 2024 to explore coupling between the solar wind and Earth?s magnetosphere. SMILE will simultaneously monitor the movement of the magnetopause boundary and the subsequent response of the Northern Hemisphere ionosphere using two imaging cameras with offset field of views. The magnetopause is known to respond to changes in the incoming solar wind and interplanetary field, but this will be the first time that real-time images of this movement will be tracked. The high-latitude ionosphere is connected to near-Earth space via terrestrial magnetic field lines. Phenomena in the ionosphere, such as patches of aurora and precipitating particle signatures may be provoked as a direct result of processes at the dayside magnetopause. Alternatively, nightside or magnetotail processes lead to the large-scale phenomena such as a substorm. In this talk we will explore how SMILE will contribute to resolving the large outstanding questions regarding the Earth?s magnetosphere. We will examine the efforts of the global solar-terrestrial community to use multiple and varied experimental data, for example from radar, ground magnetometers, and all-sky auroral imagers in unravelling these questions at large, medium, and small temporal and spatial scales. _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Michael.Andersonjennings at nottingham.ac.uk Mon Mar 17 10:49:35 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Mon, 17 Mar 2025 10:49:35 +0000 Subject: [Astro] Lunch Talk Message-ID: Hi Everyone, This week's lunch talk will be given by Harley, at 1pm on Thursday in A113. Title and abstract are below: Origins of Intracluster Light (in Simulations) Despite noteworthy differences between the simulation codes used (and a number of significant differences between the predictions of the two simulations), the result that roughly Milky-Way mass galaxies are the most significant contributors of ICL stars to halo mass ~ 1014 Msun galaxy clusters at z=0 appears broadly consistent between the two simulations. However, the two simulations do differ in regards to the predicted significance of secondary ICL formation channels - namely, extra-galactic star-formation in clusters ("in-situ" ICL). Thanks, Mikey Mikey Anderson Jennings Astronomy PhD Student University of Nottingham Centre for Astronomy and Particle Theory -------------- next part -------------- An HTML attachment was scrubbed... URL: From Alfonso.Aragon at nottingham.ac.uk Tue Mar 18 17:18:23 2025 From: Alfonso.Aragon at nottingham.ac.uk (Alfonso Aragon-Salamanca) Date: Tue, 18 Mar 2025 17:18:23 +0000 Subject: [Astro] [CAPT] FW: 2025 STFC Annual Student Survey - Reminder In-Reply-To: References: Message-ID: Dear STFC-funded PhD students, If you are fully or partially funded by STFC, please make sure you complete the annual survey. Best wishes, Alfonso Alfonso Arag?n-Salamanca Professor of Astronomy School of Physics and Astronomy University of Nottingham Room B106b, Centre for Astronomy and Particle Theory University Park Nottingham, NG7 2RD, UK +44 (0) 115 95 16230 | alfonso.aragon at nottingham.ac.uk URL: http://nottingham.ac.uk/physics/people/alfonso.aragon General teaching enquiries physics-teaching at nottingham.ac.uk From: studentships at stfc.ac.uk Sent: 18 March 2025 15:45 Subject: 2025 STFC Annual Student Survey - Reminder Some people who received this message don't often get email from studentships at stfc.ac.uk. Learn why this is important Dear STFC PhD Supervisor Just a gentle reminder that the 2025 STFC ANNUAL STUDENT SURVEY is still live. We have sent out emails to all PhD students for response but would appreciate if you could also notify STFC funded students that the annual questionnaire is ready for completion. This year's completion date is Friday 31 March 2025. https://app.onlinesurveys.jisc.ac.uk/s/stfc/stfc-phd-student-survey-2025 Or they can access using the QR code below: [cid:image001.jpg at 01DB9829.C03C25D0] If your students experience any issues completing the questionnaire, then they should get in touch with us at studentships at stfc.ukri.org. If you are no longer a supervisor, then please let us know for the purpose of this year's exercise. Many thanks Becky Becky Lyons (She/Her) Programme Manager Education, Training and Careers, Programmes Directorate Science and Technology Facilities Council M: 07909 337576 Rebecca.lyons-helps at stfc.ukri.org [cid:image003.png at 01DB981C.AFD37A20] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image003.png Type: image/png Size: 21963 bytes Desc: image003.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 14149 bytes Desc: image001.jpg URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Luke.Conaboy at nottingham.ac.uk Wed Mar 19 11:40:17 2025 From: Luke.Conaboy at nottingham.ac.uk (Luke Conaboy) Date: Wed, 19 Mar 2025 11:40:17 +0000 Subject: [Astro] [CAPT] Fwd: Astro seminar Wed 19th Mar 15:45 C4 -- Jenny Carter (Leicester) References: <24B7B7BE-B7B8-4DE5-BFC3-B6CC390D72B1@nottingham.ac.uk> Message-ID: Reminder for the astro seminar today! Begin forwarded message: From: Luke Conaboy Subject: Astro seminar Wed 19th Mar 15:45 C4 -- Jenny Carter (Leicester) Date: 17 March 2025 at 09:58:59 GMT To: capt at nottingham.ac.uk Hi all, this week our seminar is given by Jenny Carter (Leicester), talking about SMILE, the magnetopause and aurora! The seminar will be in C4. This seminar will be the final of this term. Post-seminar refreshments will be wine and cheese. Timings are as usual: - lunch at Lakeside, leaving CAPT ~13:00 (subsidised for a limited number of students -- let me know before the end of the day tomorrow) - meet the speaker for postgrads at 15:00, finishing at 15:30 - seminar at 15:45 in C5/C4 - post-seminar wine and cheese at 16:45 This seminar will be conducted in person only. Best, Jesse and Luke == SMILE! The first simultaneous images of the magnetopause and aurora The Solar wind Magnetosphere Ionosphere Link Explorer (SMILE) is a joint European Space Agency, Chinese Academy of Sciences mission due for launch in 2024 to explore coupling between the solar wind and Earth?s magnetosphere. SMILE will simultaneously monitor the movement of the magnetopause boundary and the subsequent response of the Northern Hemisphere ionosphere using two imaging cameras with offset field of views. The magnetopause is known to respond to changes in the incoming solar wind and interplanetary field, but this will be the first time that real-time images of this movement will be tracked. The high-latitude ionosphere is connected to near-Earth space via terrestrial magnetic field lines. Phenomena in the ionosphere, such as patches of aurora and precipitating particle signatures may be provoked as a direct result of processes at the dayside magnetopause. Alternatively, nightside or magnetotail processes lead to the large-scale phenomena such as a substorm. In this talk we will explore how SMILE will contribute to resolving the large outstanding questions regarding the Earth?s magnetosphere. We will examine the efforts of the global solar-terrestrial community to use multiple and varied experimental data, for example from radar, ground magnetometers, and all-sky auroral imagers in unravelling these questions at large, medium, and small temporal and spatial scales. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Clare.Burrage at nottingham.ac.uk Wed Mar 19 14:36:00 2025 From: Clare.Burrage at nottingham.ac.uk (Clare Burrage) Date: Wed, 19 Mar 2025 14:36:00 +0000 Subject: [Astro] Dinner with Jo Dunkley next Wednesday Message-ID: Hi All, Next week's Physics Colloquium will be given by Jo Dunkley from Princeton about the new results from the Atacama Cosmology Telescope. We will be taking Jo out for dinner on Wednesday evening after the colloquium. Possibly we will go to the Bramleys Restaurant in the Orchard Hotel, although I am open to other suggestions! If you would like to join us for dinner, please let me know by the end of this week, so that I can book a table on Monday. Best wishes Clare -------------- next part -------------- An HTML attachment was scrubbed... URL: From Michael.Andersonjennings at nottingham.ac.uk Thu Mar 20 09:06:52 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Thu, 20 Mar 2025 09:06:52 +0000 Subject: [Astro] Lunch Talk In-Reply-To: References: Message-ID: Hi everyone, Reminder of the lunch talk today at 1pm in A113. Thanks, Mikey Sent from Outlook for iOS ________________________________ From: Michael Anderson Jennings Sent: Monday, March 17, 2025 10:49:35 AM To: astro at nottingham.ac.uk Subject: Lunch Talk Hi Everyone, This week's lunch talk will be given by Harley, at 1pm on Thursday in A113. Title and abstract are below: Origins of Intracluster Light (in Simulations) Despite noteworthy differences between the simulation codes used (and a number of significant differences between the predictions of the two simulations), the result that roughly Milky-Way mass galaxies are the most significant contributors of ICL stars to halo mass ~ 1014 Msun galaxy clusters at z=0 appears broadly consistent between the two simulations. However, the two simulations do differ in regards to the predicted significance of secondary ICL formation channels - namely, extra-galactic star-formation in clusters ("in-situ" ICL). Thanks, Mikey Mikey Anderson Jennings Astronomy PhD Student University of Nottingham Centre for Astronomy and Particle Theory -------------- next part -------------- An HTML attachment was scrubbed... URL: From Joseph.Butler at nottingham.ac.uk Fri Mar 21 16:03:22 2025 From: Joseph.Butler at nottingham.ac.uk (Joseph Butler) Date: Fri, 21 Mar 2025 16:03:22 +0000 Subject: [Astro] [CAPT] Cake Message-ID: Hi all, We have cake, courtesy of Jen! Today we have a coffee & walnut cake (allergens: milk, egg and walnuts) and a belgian chocolate cake (allergens: milk, soya, wheat and egg). Joe -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Elisa.Todarello at nottingham.ac.uk Mon Mar 24 08:30:00 2025 From: Elisa.Todarello at nottingham.ac.uk (Elisa Todarello) Date: Mon, 24 Mar 2025 08:30:00 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar + discussion with students: Peter Millington Message-ID: Dear All, We have a seminar this week whose details are provided below. The speaker will be also available for a discussion with students from 10,30 to 11,30 am in A 113. ----------------------------------------- Speaker: Peter Millington (U. Manchester) Seminar date: March 25th, Tuesday, 1 pm UK time Venue: Seminar Room A 113 (Cripps North Building, CAPT) Title: Pseudo-Hermitian Quantum Field Theories from First Principles Abstract: It is now well established that quantum theories described by non-Hermitian Hamiltonians can exhibit real spectra and a unitary evolution. The viability of these ?pseudo-Hermitian? quantum theories often relies on the invariance of the Hamiltonian under antilinear spacetime symmetries; namely, the combined action of parity and time-reversal transformations. Spacetime symmetries play a special role in quantum field theory, and this makes the second quantization of pseudo-Hermitian mechanics more intricate. In this talk, I will describe how self-consistent pseudo-Hermitian quantum field theories can be built from first principles and highlight novel implications for high energy physics phenomenology. -------------------------------------------------- Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d List of upcoming Seminars: 01st April: Anna Kormu (Helsinki) 08th April: Tales of Gravity Conference 15th April: No seminar 22nd April: Isobel Romero (Cambridge) 29th April: Daniel Panizo (Kyoto U) 6th May: Ameek Malhotra (Swansea) ---------------------------------------------------------------------- With Regards, -Elisa & Swagat -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 24 08:33:41 2025 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor) Date: Mon, 24 Mar 2025 08:33:41 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c 24-03-25) Message-ID: Monday 24th March at 3pm, A113 CAPT ? Theoretical Physics Student Seminar Peter Du Unitarisation from Geometry --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesday 25th March at 1pm, A113 CAPT ? Particle Cosmology and Gravity Seminar Peter Millington (University of Manchester) Pseudo-Hermitian Quantum Field Theories from First Principles It is now well established that quantum theories described by non-Hermitian Hamiltonians can exhibit real spectra and a unitary evolution. The viability of these ?pseudo-Hermitian? quantum theories often relies on the invariance of the Hamiltonian under antilinear spacetime symmetries; namely, the combined action of parity and time-reversal transformations. Spacetime symmetries play a special role in quantum field theory, and this makes the second quantization of pseudo-Hermitian mechanics more intricate. In this talk, I will describe how self-consistent pseudo-Hermitian quantum field theories can be built from first principles and highlight novel implications for high energy physics phenomenology. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d The speaker will be also available for a discussion with students from 10:30 to 11:30 in A113 --- Wednesday 26th March at 3pm, B13 Physics ? School Colloquium Professor Jo Dunkley (Princeton) New maps and cosmological results from the Atacama Cosmology Telescope I will show new results from the Atacama Cosmology Telescope (ACT), including cosmological constraints and data products from the sixth data release, DR6. Using data gathered from 2017 - 2022, the new maps cover 40% of the microwave sky with five times the angular resolution and three times the depth in polarization as the Planck satellite. The improved cosmic microwave background (CMB) measurements at small scales complement the larger-scale information from Planck. I will describe how we use these datasets, along with tracers of large-scale-structure, to probe the fundamental physics of the universe across epochs and scales. --- Thursday 27th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Alfonso Aragon-Salamanca The separate effect of halo mass and stellar mass on the evolution of massive disc galaxies We analyse a sample of massive disc galaxies selected from the fourth-generation Sloan Digital Sky Survey/Mapping Nearby Galaxies at Apache Point Observatory survey to investigate how the evolution of these galaxies depends on their stellar and halo masses. We applied a semi-analytic spectral fitting approach to the data from different regions in the galaxies to derive several of their key physical properties. From the best-fitting model results, together with direct observables such as morphology, colour, and the Mgb/ index ratio measured within 1Re , we find that for central galaxies both their stellar and halo masses have a significant influence in their evolution. For a given halo mass, galaxies with higher stellar mass accumulate their stellar mass and become chemically enriched earlier than those with smaller stellar mass. Furthermore, at a given stellar mass, galaxies living in more massive haloes have longer star formation time-scales and are delayed in becoming chemically enriched. In contrast, the evolution of massive satellite galaxies is mostly determined by their stellar mass. The results indicate that both the assembled halo mass and the halo assembly history impact the evolution of central galaxies. Our spatially resolved analysis indicates that only the galaxy properties in the central region (0.0?0.5 Re ) show the dependencies described above. This fact supports a halo-driven formation scenario since the galaxies? central regions are more likely to contain old stars formed along with the halo itself, keeping a memory of the halo formation process. Thursday 27th March at 3pm, A113 CAPT ? Particle Cosmology Journal Club Student Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DB97E4.E71C2280] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 190221 bytes Desc: image001.png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Michael.Andersonjennings at nottingham.ac.uk Mon Mar 24 09:17:47 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Mon, 24 Mar 2025 09:17:47 +0000 Subject: [Astro] Lunch talk Message-ID: Hi everyone, This week's lunch talk will be given by Alfonso, on Thursday at 1pm in A113. Title and abstract are below. The separate effect of halo mass and stellar mass on the evolution of massive disc galaxies We analyse a sample of massive disc galaxies selected from the fourth-generation Sloan Digital Sky Survey/Mapping Nearby Galaxies at Apache Point Observatory survey to investigate how the evolution of these galaxies depends on their stellar and halo masses. We applied a semi-analytic spectral fitting approach to the data from different regions in the galaxies to derive several of their key physical properties. From the best-fitting model results, together with direct observables such as morphology, colour, and the Mgb/ index ratio measured within 1Re , we find that for central galaxies both their stellar and halo masses have a significant influence in their evolution. For a given halo mass, galaxies with higher stellar mass accumulate their stellar mass and become chemically enriched earlier than those with smaller stellar mass. Furthermore, at a given stellar mass, galaxies living in more massive haloes have longer star formation time-scales and are delayed in becoming chemically enriched. In contrast, the evolution of massive satellite galaxies is mostly determined by their stellar mass. The results indicate that both the assembled halo mass and the halo assembly history impact the evolution of central galaxies. Our spatially resolved analysis indicates that only the galaxy properties in the central region (0.0?0.5 Re ) show the dependencies described above. This fact supports a halo-driven formation scenario since the galaxies? central regions are more likely to contain old stars formed along with the halo itself, keeping a memory of the halo formation process. Thanks, Mikey Sent from Outlook for iOS -------------- next part -------------- An HTML attachment was scrubbed... URL: From phil.parry at nottingham.ac.uk Mon Mar 24 18:22:16 2025 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Mon, 24 Mar 2025 18:22:16 +0000 Subject: [Astro] [CAPT] Astronomy website broken Message-ID: Hi all, The URL https://www.nottingham.ac.uk/astronomy is down at the moment.? I've reported it to DTS, please use https://unixweb.nottingham.ac.uk/~ppzastro/ in the meantime (this will probably only work from on campus.) Cheers Phil P _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Elisa.Todarello at nottingham.ac.uk Tue Mar 25 09:11:24 2025 From: Elisa.Todarello at nottingham.ac.uk (Elisa Todarello) Date: Tue, 25 Mar 2025 09:11:24 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar + discussion with students: Peter Millington In-Reply-To: References: Message-ID: Hello, A reminder of the student's discussion with the seminar speaker at 10,30 in A133. Cheers, Elisa ________________________________ From: Elisa Todarello (staff) Sent: 21 March 2025 14:08 To: capt at nottingham.ac.uk ; maths-quantum-gravity-group at lists.nottingham.ac.uk ; O365-Gravity Laboratory ; ncog-people at nottingham.ac.uk Cc: Bobby Acharya ; Ella Batchelor (staff) ; Drande Patogu ; Leonora van Deurs ; Jacob Thornley ; Peter Millington Subject: Particle Cosmology and Gravity Seminar + discussion with students: Peter Millington Dear All, We have a seminar this week whose details are provided below. The speaker will be also available for a discussion with students from 10,30 to 11,30 am in A 113. ----------------------------------------- Speaker: Peter Millington (U. Manchester) Seminar date: March 25th, Tuesday, 1 pm UK time Venue: Seminar Room A 113 (Cripps North Building, CAPT) Title: Pseudo-Hermitian Quantum Field Theories from First Principles Abstract: It is now well established that quantum theories described by non-Hermitian Hamiltonians can exhibit real spectra and a unitary evolution. The viability of these ?pseudo-Hermitian? quantum theories often relies on the invariance of the Hamiltonian under antilinear spacetime symmetries; namely, the combined action of parity and time-reversal transformations. Spacetime symmetries play a special role in quantum field theory, and this makes the second quantization of pseudo-Hermitian mechanics more intricate. In this talk, I will describe how self-consistent pseudo-Hermitian quantum field theories can be built from first principles and highlight novel implications for high energy physics phenomenology. -------------------------------------------------- Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d List of upcoming Seminars: 01st April: Anna Kormu (Helsinki) 08th April: Tales of Gravity Conference 15th April: No seminar 22nd April: Isobel Romero (Cambridge) 29th April: Daniel Panizo (Kyoto U) 6th May: Ameek Malhotra (Swansea) ---------------------------------------------------------------------- With Regards, -Elisa & Swagat -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Anne.Green at nottingham.ac.uk Tue Mar 25 09:24:03 2025 From: Anne.Green at nottingham.ac.uk (Anne Green) Date: Tue, 25 Mar 2025 09:24:03 +0000 Subject: [Astro] Fw: EuCAPT virtual colloquium Tue April 8th 15.00 CET, Amina Helmi: Dynamics and history of the Milky Way In-Reply-To: References: Message-ID: Dear All, This upcoming EuCAPT virtual colloquium may be of interest to astronomers. Best regards, Anne ________________________________ From: S?bastien Renaux-Petel Sent: 25 March 2025 08:12 To: EuCAPT-members at cern.ch ; eucapt-news at cern.ch Subject: EuCAPT virtual colloquium Tue April 8th 15.00 CET, Amina Helmi: Dynamics and history of the Milky Way Dear all, We are delighted to announce that the next EuCAPT virtual colloquium at 15.00 CET on Tuesday April 8th will be delivered by Amina Helmi (University of Groningen) Title: Dynamics and history of the Milky Way Abstract: Our understanding of the Milky Way and its constituents is undergoing a revolutionary change driven primarily by the Gaia space mission, and which is further reinforced when combined with spectroscopic surveys from the ground. In this colloquium, I will highlight a few of the results stemming from the analysis of the truly spectacular Gaia data releases. Specifically, I will discuss what we have learned about the assembly history of the Milky Way thus far. I will also present some intriguing findings regarding its dynamics and our current efforts to place the Milky Way in a proper cosmological context. Full details (including zoom link): https://indico.cern.ch/event/1469746/ The colloquium will be recorded and made available at the same link. Best regards, S?bastien Renaux-Petel on behalf of the EuCAPT colloquium task force -------------- next part -------------- An HTML attachment was scrubbed... URL: From phil.parry at nottingham.ac.uk Tue Mar 25 10:35:38 2025 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Tue, 25 Mar 2025 10:35:38 +0000 Subject: [Astro] [CAPT] [UoN IT Service Status Page] - Some internal websites not available - New Incident In-Reply-To: References: Message-ID: <14d7d627-e512-4a89-b4bc-04325af64da1@nottingham.ac.uk> Hi all, Further to this message forwarded by Sharon, I'd like to elaborate a little. Any web page/site hosted on Unixweb (formerly Granby) and with a URL taking the form of https://www.nottingham.ac.uk/~username, has been taken offline.? This will affect a number of staff here in CAPT with personal web pages.? Please refer to the message and website below for further information and steps to take.? Please contact the helpdesk or myself if you have any questions. The main Astronomy website at https://www.nottingham.ac.uk/astronomy (which is an alias for https://www.nottingham.ac.uk/~ppzastro) is affected by this too, but is being dealt with and should be back very soon.? AFAIK the Particle Cosmology site is hosted on the main University CMS and is unaffected, but please let me know if that's incorrect. Thanks, Phil P On 25/03/2025 10:23, Sharon Meeks (staff) wrote: > > Image removed by sender. Uon it service status page > > > *New Incident Details * > > *Some internal websites not available - Monitoring * > > Incident start: 25/03/2025 09:47AM GMT > > > Following a notice from the Information Commissioner's Office, all > university websites previously set up via third parties and routed > through nottingham.ac.uk have been disabled. > > If your website is affected by this, please visit the following site > for advice and support: > https://preview-uon.cloud.contensis.com/externalrelations/digital-and-marketing/web-team/support/index.aspx > > > *Services Affected * > > Image removed by sender. ? > > > > [Websites] UoN Website > > Visit the incident page > > > Visit the UoN IT Service Status Page hub page > > > > Unsubscribe from these alerts > > or Edit your subscription > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: ~WRD314.jpg Type: image/jpeg Size: 823 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 335 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From phil.parry at nottingham.ac.uk Tue Mar 25 11:06:07 2025 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Tue, 25 Mar 2025 11:06:07 +0000 Subject: [Astro] [CAPT] Astronomy website broken In-Reply-To: References: Message-ID: Hi again, This should now be fixed. Cheers Phil P On 24/03/2025 18:22, Phil Parry wrote: > Hi all, > > The URL https://www.nottingham.ac.uk/astronomy is down at the moment.? > I've reported it to DTS, please use > https://unixweb.nottingham.ac.uk/~ppzastro/ in the meantime (this will > probably only work from on campus.) > > Cheers > > Phil P > > > _______________________________________________ > CAPT mailing list > CAPT at lists.nottingham.ac.uk > https://lists.nottingham.ac.uk/mailman/listinfo/capt _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Omar.Almaini at nottingham.ac.uk Wed Mar 26 10:15:58 2025 From: Omar.Almaini at nottingham.ac.uk (Omar Almaini) Date: Wed, 26 Mar 2025 10:15:58 +0000 Subject: [Astro] Fwd: School of Physics and Astronomy Colloquium [In-person] Message-ID: <21E61F13-F2F3-4273-9703-A0B41518E45C@exmail.nottingham.ac.uk> Hi everyone A reminder that all PhD students are expected to attend School Colloquia. Best wishes Omar Begin forwarded message: From: PP-PAtoHoS Date: 26 March 2025 at 09:36:22 GMT Subject: School of Physics and Astronomy Colloquium [In-person] ?School of Physics and Astronomy Colloquium Wednesday 26th March 2025 ? B13 Physics ? 3:00-4:00pm Refreshments served in C10 after the Colloquium New maps and cosmological results from the Atacama Cosmology Telescope Professor Jo Dunkley Princeton University Abstract I will show new results from the Atacama Cosmology Telescope (ACT), including cosmological constraints and data products from the sixth data release, DR6. Using data gathered from 2017 - 2022, the new maps cover 40% of the microwave sky with five times the angular resolution and three times the depth in polarization as the Planck satellite. The improved cosmic microwave background (CMB) measurements at small scales complement the larger-scale information from Planck. I will describe how we use these datasets, along with tracers of large-scale-structure, to probe the fundamental physics of the universe across epochs and scales. -------------- next part -------------- An HTML attachment was scrubbed... URL: From Garreth.Martin at nottingham.ac.uk Wed Mar 26 12:10:35 2025 From: Garreth.Martin at nottingham.ac.uk (Garreth Martin) Date: Wed, 26 Mar 2025 12:10:35 +0000 Subject: [Astro] Fw: NAM2025 reminder: Rubin/LSST early science in 2025 In-Reply-To: References: Message-ID: ________________________________ From: LSST:UK Announcements on behalf of Graham Smith Sent: 26 March 2025 10:45 To: LUSC-ANNOUNCE at JISCMAIL.AC.UK Subject: NAM2025 reminder: Rubin/LSST early science in 2025 Dear colleagues The first release of on-sky Rubin/LSST data to data rights holders, including members of LSST:UK, is scheduled for July 2025, approximately coincident with NAM2025 in Durham. This is therefore the perfect time to join the Rubin/LSST NAM sessions, especially if you are new to Rubin/LSST and/or excited about doing some early science! This Rubin/LSST NAM sessions aim to support/enable participation in early science, and encourage people to get involved. The lunch session is organised by and dedicated to Early Career Researchers. Enabling early science with Rubin LSST in 2025: Parallel sessions (#62) LSST and LSST:UK for Early Career Researchers: Lunch session (#93) The abstract submission deadline is March 30th via the NAM2025 website. https://conference.astro.dur.ac.uk/event/7/program https://conference.astro.dur.ac.uk/event/7/abstracts We welcome abstract submissions for both parallel and lunch sessions on a broad range of topics, including Rubin/LSST preparations in the community, and plans/ideas for Rubin/LSST science, including early science. The sessions will also include practical information, training, and help from established members of the LSST:UK community. The abstracts of the sessions themselves are below. Best regards Graham Smith, LSST:UK Project Scientist On behalf of the organisers: Steve Ardern, Astha, Michelle Collins, Thomas Cornish, Suhail Dhawan, Dimple, Paul Giles, Chris Lintott, Bob Mann, Garreth Martin, Steph Merritt, Mahdieh Navabi, Clara Pennock, Ana Sainz de Murieta, Jason Sanders, Matthew Temple, Roy Williams, Jacco van Loon More information about LSST:UK and how to get involved: https://www.lsst.ac.uk/ lsst-uk.atlassian.net ? LSST and LSST:UK for Early Career Researchers: Lunch session (#93) At NAM2025 we aim to encourage and enable the widest possible participation and engagement with the early data. This lunch session will be organised by and dedicated to Early Career Researchers, offering a selection of talks and other activities that are focused their needs and interests. Abstract submissions are encouraged from early career researchers. Enabling early science with Rubin LSST in 2025: Parallel sessions (#62) The Vera C. Rubin Observatory?s Legacy Survey of Space and Time (LSST) will be a major pillar of the UK astronomy programme for the next two decades. Its unprecedented combination of spatial, spectral and temporal coverage enable it to probe a broad range of astrophysical phenomena, across all areas of astronomy, from near-Earth asteroids to distant quasars, the dark energy believed to drive the Universe?s accelerating expansion, and much more. NAM2025 coincides with a major milestone of broad impact across the UK and international communities: the first release of on-sky Rubin data to data rights holders. These data have already been obtained during observations with the commissioning camera in late 2024. Science Verification observations with LSSTCam are also expected to be well underway in summer 2025. In addition to the parallel session there is also a lunchtime session. We aim to encourage and enable the widest possible participation and engagement with the early data, with a particular focus on early career researchers. We aim for a balance between five themes, across these five sessions: o Introduction: Rubin/LSST, LSST:UK, and the international Science Collaborations o Early career science: plans for early and future science with the Rubin data o Tutorials and examples: how to access, filter, and manipulate Rubin data o Community insights: technical and scientific preparations by LSST:UK researchers o Engagement: an introduction to the LSST:UK engagement programme In addition to talks from across the community, the sessions will include training, Q+A for early career researchers, a hack session, and a facilitated discussion. ________________________________ To unsubscribe from the LUSC-ANNOUNCE list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=LUSC-ANNOUNCE&A=1 -------------- next part -------------- An HTML attachment was scrubbed... URL: From Michael.Andersonjennings at nottingham.ac.uk Thu Mar 27 09:23:11 2025 From: Michael.Andersonjennings at nottingham.ac.uk (Michael Anderson Jennings) Date: Thu, 27 Mar 2025 09:23:11 +0000 Subject: [Astro] Lunch talk In-Reply-To: References: Message-ID: Hi everyone, Reminder of the lunch talk today at 1pm. Thanks, Mikey Sent from Outlook for iOS ________________________________ From: Astro on behalf of Michael Anderson Jennings Sent: Monday, March 24, 2025 9:17:47 AM To: astro at nottingham.ac.uk Subject: [Astro] Lunch talk Hi everyone, This week's lunch talk will be given by Alfonso, on Thursday at 1pm in A113. Title and abstract are below. The separate effect of halo mass and stellar mass on the evolution of massive disc galaxies We analyse a sample of massive disc galaxies selected from the fourth-generation Sloan Digital Sky Survey/Mapping Nearby Galaxies at Apache Point Observatory survey to investigate how the evolution of these galaxies depends on their stellar and halo masses. We applied a semi-analytic spectral fitting approach to the data from different regions in the galaxies to derive several of their key physical properties. From the best-fitting model results, together with direct observables such as morphology, colour, and the Mgb/ index ratio measured within 1Re , we find that for central galaxies both their stellar and halo masses have a significant influence in their evolution. For a given halo mass, galaxies with higher stellar mass accumulate their stellar mass and become chemically enriched earlier than those with smaller stellar mass. Furthermore, at a given stellar mass, galaxies living in more massive haloes have longer star formation time-scales and are delayed in becoming chemically enriched. In contrast, the evolution of massive satellite galaxies is mostly determined by their stellar mass. The results indicate that both the assembled halo mass and the halo assembly history impact the evolution of central galaxies. Our spatially resolved analysis indicates that only the galaxy properties in the central region (0.0?0.5 Re ) show the dependencies described above. This fact supports a halo-driven formation scenario since the galaxies? central regions are more likely to contain old stars formed along with the halo itself, keeping a memory of the halo formation process. Thanks, Mikey Sent from Outlook for iOS -------------- next part -------------- An HTML attachment was scrubbed... URL: From Guillaume.Hewitt at nottingham.ac.uk Fri Mar 28 16:02:49 2025 From: Guillaume.Hewitt at nottingham.ac.uk (Guillaume Hewitt) Date: Fri, 28 Mar 2025 16:02:49 +0000 Subject: [Astro] [CAPT] Cake! Message-ID: Hi everyone, Today we have brownies for the treat (non-vegan unfortunately). Enjoy! Guillaume -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Elisa.Todarello at nottingham.ac.uk Mon Mar 31 08:30:00 2025 From: Elisa.Todarello at nottingham.ac.uk (Elisa Todarello) Date: Mon, 31 Mar 2025 07:30:00 +0000 Subject: [Astro] =?iso-8859-1?q?=5BCAPT=5D_Particle_Cosmology_and_Gravity?= =?iso-8859-1?q?_Seminar=3A=A0Anna_Kormu?= Message-ID: Dear All, We have a seminar this week whose details are provided below. ----------------------------------------- Speaker: Anna Kormu (U. Helsinki) Seminar date: April 1st, Tuesday, 1 pm UK time Venue: Seminar Room A 113 (Cripps North Building, CAPT) Title: Trouble in the Bubble - Testing Bubble Nucleation Calculations for Strong Phase Transitions Abstract: Nucleation rate computations are of broad importance in particle physics and cosmology. Previously, these nucleation rates have generally been calculated perturbatively, but those calculations depend on the semiclassical picture of the bubble and its fluctuations, and different orders of perturbative calculation yield very different results. In this talk, I will give you an update on the results of our lattice calculations of the nucleation rate. We focused on a real scalar theory with a tree-level potential barrier and performed nonperturbative simulations to determine the nucleation rate, computing a final result extrapolated to the thermodynamic and continuum limits. Although the system in question should be well-described by a complete one-loop perturbative calculation, we find only qualitative agreement with the full perturbative result. Our result motivates further testing of the current nucleation paradigm. -------------------------------------------------- Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d List of upcoming Seminars: 08th April: Tales of Gravity Conference 15th April: Kieran Wood (Nottingham) 22nd April: Isobel Romero (Cambridge) 29th April: Daniel Panizo (Kyoto U) 6th May: Ameek Malhotra (Swansea) 13th May: David Trestini (Southampton) ---------------------------------------------------------------------- With Regards, -Elisa & Swagat -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 31 08:48:46 2025 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor) Date: Mon, 31 Mar 2025 07:48:46 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c: 31-03-25) Message-ID: Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesday 1st April at 1pm, A113 CAPT ? Particle Cosmology and Gravity Seminar Anna Kormu (Helsinki) Trouble in the Bubble - Testing Bubble Nucleation Calculations for Strong Phase Transitions Nucleation rate computations are of broad importance in particle physics and cosmology. Previously, these nucleation rates have generally been calculated perturbatively, but those calculations depend on the semiclassical picture of the bubble and its fluctuations, and different orders of perturbative calculation yield very different results. In this talk, I will give you an update on the results of our lattice calculations of the nucleation rate. We focused on a real scalar theory with a tree-level potential barrier and performed nonperturbative simulations to determine the nucleation rate, computing a final result extrapolated to the thermodynamic and continuum limits. Although the system in question should be well-described by a complete one-loop perturbative calculation, we find only qualitative agreement with the full perturbative result. Our result motivates further testing of the current nucleation paradigm. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Thursday 3rd April at 3pm, A113 CAPT ? Particle Cosmology Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DB9F15.BD5CD970] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... 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Cheers Omar [6c78f740-0d7f-11f0-a1c5-cd0d1898b025.jpeg] Appeal after high-value thefts at University of Nottingham bbc.co.uk Omar Almaini Professor of Astrophysics School of Physics & Astronomy University of Nottingham Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 84 67901 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 6c78f740-0d7f-11f0-a1c5-cd0d1898b025.jpeg Type: image/jpeg Size: 74119 bytes Desc: 6c78f740-0d7f-11f0-a1c5-cd0d1898b025.jpeg URL: