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<p class="elementtoproof" style="background:white"><b><span style="font-size:16.0pt;color:black">Monday 27<sup>th</sup> October at 3pm, A113 CAPT – Theoretical Physics Student Seminar</span></b><o:p></o:p></p>
<p class="elementtoproof" style="background:white"><span style="font-size:16.0pt;color:black">Adam Shaw</span><o:p></o:p></p>
<p class="elementtoproof" style="background:white"><span style="font-size:14.0pt;color:black;mso-fareast-language:EN-US">Hamiltonian analysis of classical gauge fixing
<o:p></o:p></span></p>
<p class="elementtoproof" style="background:white"><b><span style="font-size:16.0pt;color:black">---</span></b><o:p></o:p></p>
<p class="elementtoproof" style="background:white"><b><span style="font-size:16.0pt;color:black">Tuesdays at 11am, CAPT Foyer – Astro Coffee</span></b><o:p></o:p></p>
<p class="elementtoproof" style="background:white"><b><span style="font-size:16.0pt;color:black"> </span></b><o:p></o:p></p>
<p class="elementtoproof" style="background:white"><b><span style="font-size:16.0pt;color:black">Tuesday 28<sup>th</sup> October at 1pm, A113 CAPT – Particle Cosmology and Gravity Seminar</span></b><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Jack Shergold (Liverpool)</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black;mso-fareast-language:EN-US">Atomic and molecular transitions for neutrino and light dark matter detection <o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">The detection of light, cold, and weakly interacting relics from the early universe is an extraordinary challenge. In this talk, I will discuss the possibility of using atoms and molecules as relic neutrino and
dark matter detectors. I will begin with a brief introduction to generalised atomic interactions, and then discuss our<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">recent progress: CINCO, an automated tool for the computation of atomic transition amplitudes, and pair absorption, which is particularly sensitive to light, bosonic dark matter. Time allowing, I will then move
on to discuss our current work using molecules and crystals. <br>
<br>
<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:11.5pt;color:black">Link to join:</span></b><span style="font-size:11.5pt;color:black"> <a href="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" target="_blank" title="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">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</a></span><span style="color:black"><br>
</span><span style="font-size:16.0pt;color:black">---</span><o:p></o:p></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Wednesday 29<sup>th</sup> October at 11am, A113 CAPT – CAPT Coding Club<o:p></o:p></span></b></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif"><o:p> </o:p></span></b></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Wednesday 29<sup>th</sup> October at 3pm, B1 Physics – School Colloquium<o:p></o:p></span></b></p>
<p class="elementtoproof" style="background:white"><span style="font-size:16.0pt;color:black">Oliver Buchmueller (Imperial)<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black;mso-fareast-language:EN-US">Exploring the Universe with Quantum Technology: A New Frontier in Fundamental Physics<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:standardcontextual;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="xmsonormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:standardcontextual;mso-fareast-language:EN-US">Recent advances in cold-atom quantum technology are opening an unprecedented window on the Universe. Professor Oliver
Buchmueller will show how these sensors are now addressing some of the most fundamental questions in physics. This technology enables ultra-sensitive gravitational-wave detection in the mid-frequency band, filling the crucial gap between LISA and ground-based
observatories (LIGO, Virgo, KAGRA, INDIGO, Einstein Telescope, and Cosmic Explorer), while advancing multiple frontiers in fundamental science. Applications include dark-matter searches, studies of intermediate-mass black-hole mergers, and investigations of
early-universe cosmology.<br>
<br>
<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:standardcontextual;mso-fareast-language:EN-US">The talk will introduce the UK’s Atom Interferometer Observatory and Network (AION) and the newly established Terrestrial
Very-Long-Baseline Atom Interferometry (TVLBAI) proto-collaboratio - an international initiative targeting kilometre-scale detectors by the mid-2030s. Combined with proposed space missions such as AEDGE, these efforts herald a new scientific era in which quantum
instruments probe gravitational phenomena, dark matter, cosmology, and the architecture of space-time itself.<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">---</span><o:p></o:p></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Thursday 30<sup>th</sup> October at 1pm, A113 CAPT – Astronomy Lunch Talk</span></b><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Tutku Kolcu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;mso-ligatures:none;mso-fareast-language:EN-GB">Tracing the invisible: The shape of cluster haloes revealed by intracluster light<o:p></o:p></span></p>
<p class="xmsonormal" style="caret-color: rgb(255, 255, 255)"><o:p> </o:p></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif"> </span><span style="font-family:"Aptos",sans-serif;color:black;mso-fareast-language:EN-US">The intracluster light (ICL) provides a powerful means of tracing the diffuse stellar
component of galaxy clusters and directly probing the shapes of their underlying dark matter haloes. The morphology of the ICL—its ellipticity, orientation, and radial variation—encodes valuable information about cluster assembly, dynamical state, and the
coupling between baryons and dark matter. However, its extremely faint nature has long hindered systematic studies of structure on cluster scales. With the advent of high-resolution, wide-field imaging from Euclid, we can now measure ICL shapes with unprecedented
precision. In this talk, I will present results from Euclid’s Quick Release (Q1), where we quantify ICL ellipticity and position angle for nearly 200 clusters between redshifts 0.1 and 0.8 across five photometric bands (VIS, Y, J, H, and coadded YJH). We find
consistent shape parameters across filters, with the H band tracing the ICL to the largest cluster-centric distances. The ICL becomes progressively more elongated with radius, reaching ellipticities consistent with those inferred from weak and strong lensing
studies, and showing alignment with both the brightest cluster galaxy and the member galaxy distribution. Comparisons with Hydrangea hydrodynamical simulations reveal similar, though slightly rounder, ICL shapes. These results establish the ICL as a robust
luminous tracer of halo structure and orientation.<br>
<br>
<o:p></o:p></span></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Thursday 30<sup>th</sup> October at 3pm, A113 CAPT – Particle Cosmology Journal Club</span></b><o:p></o:p></p>
<p class="MsoNormal">---<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:16.0pt;mso-ligatures:none;mso-fareast-language:EN-GB">Friday 31st October at 11am, A113 CAPT – Gravity Laboratory Journal Club<o:p></o:p></span></b></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Adrià Delhom and Andrea Calcinari (Universidad Complutense de Madrid)<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif">A relational description of cosmological spacetimes as hydrodynamic systems<o:p></o:p></span></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="xmsonormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-fareast-language:EN-US">In this talk we introduce a new framework called "hydrodynamics on minisuperspace" where cosmology is viewed as an effective, coarse-grained description
of an underlying fundamental quantum theory. After giving some motivation, we present a map between hydrodynamics and standard cosmology, which is based on dynamical equations and symmetry arguments. Such a map can only be achieved by means of relational observables
defined with no reference to a spacetime manifold (i.e., on minisuperspace). We also comment on the Group Field Theory (GFT) approach to quantum gravity, which realises precisely these ideas by describing the emergence of spacetime by a “condensate” of more
fundamental degrees of freedom. We conclude mentioning recent results that describe Bogolyubov excitations in GFT and hence beyond mean-field corrections.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:16.0pt">Fridays at 4pm, CAPT Foyer – CAPT Cakes</span></b><o:p></o:p></p>
<p class="MsoNormal">---<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">If you have any events/visitors you would like included in next week’s bulletin, please let me know.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Best wishes</span><span style="mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.0pt;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-GB">Ella<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#009BBD;mso-fareast-language:EN-GB">Ella Batchelor
</span></b><span style="font-family:"Arial",sans-serif;color:#009BBD;mso-fareast-language:EN-GB">(she/her)</span><o:p></o:p></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">Administrator</span></b><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">School of Physics & Astronomy</span><span lang="ZH-CN" style="font-size:9.0pt;font-family:"MS Gothic";color:#0F1245;mso-fareast-language:ZH-CN">
</span><span lang="EN-US" style="font-size:9.0pt;font-family:"MS Mincho";color:#0F1245;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">University of Nottingham</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">A112a Centre for Astronomy & Particle Theory</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">University Park</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">Nottingham, NG7 2RD</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">+44 (0) 115 74 86778<b> </b></span><b><span lang="EN-US" style="font-size:9.0pt;color:#0F1245;mso-fareast-language:EN-GB">| </span></b><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">
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<p class="MsoNormal" style="text-autospace:none"><span style="mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="mso-ligatures:none;mso-fareast-language:EN-GB"><img border="0" width="484" height="109" style="width:5.0416in;height:1.1388in" id="Picture_x0020_2042549853" src="cid:image001.png@01DC4295.02EE1530"></span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
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