[Astro] [CAPT] 'Particle Cosmology and Gravity Seminar' this week: Santi Aguei-Salcedo (DAMTP, Cambridge)

[Swagat Mishra]

Dear All,
             We have Santi Aguei-Salcedo visiting from Cambridge University this week to deliver the seminar. The details are as follows -

Speaker: Santi Aguei-Salcedo (DAMTP, Cambridge University)

Seminar date: 29 October, Tuesday 1 pm

 Venue: Seminar Room A 113  (Cripps North Building)

  Title:  The Open Effective Field Theory of Inflation

Abstract: There is an increasing interest in the interplay between Open Quantum Systems and Inflationary Physics. A time-dependent background and limited access to the degrees of freedom invites the use of Open Quantum systems. It provides a more general framework than the unitary time evolution of a free state. In this talk, based on https://arxiv.org/abs/2404.15416, we develop a local EFT for the scalar curvature perturbations subject to the dynamics of an open quantum system. We focus on recovering the scale-invariant power spectrum and its amplitude as a function of the dissipation (among other EFT parameters). Our results largely generalize the setup of warm inflation to general non-equilibrium cases. We also explore the different shapes of the bispectrum and find two distinct behaviors, at large and small dissipation.


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

With Regards,
-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

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