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Dear All,</div>
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We have Santi Aguei-Salcedo visiting from Cambridge University this week to deliver the seminar. The details are as follows -</div>
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<b>Speaker: Santi Aguei-Salcedo </b>(DAMTP, Cambridge University)</div>
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<b><i>Seminar date: 29 October</i>, Tuesday 1 pm</b></div>
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<b><i>Venue:</i></b> Seminar Room <b><u>A 113 </u>(Cripps North Building)</b></div>
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<b>Title: <i><u>The Open Effective Field Theory of Inflation</u></i></b></div>
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<b>Abstract: </b><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif, serif, EmojiFont;">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
<a href="https://arxiv.org/abs/2404.15416" target="_blank" id="OWA8095787c-30c4-36eb-7785-0b67db7afc75" class="OWAAutoLink" rel="noopener noreferrer" data-linkindex="0" data-auth="NotApplicable" data-ogsc="" style="margin: 0px;">
https://arxiv.org/abs/2404.15416</a>, 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. </span></div>
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Link to join: <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" id="OWAd8334caf-691b-a843-86d1-14c9ed771c45" class="OWAAutoLink" rel="noopener noreferrer" data-linkindex="0" data-auth="NotApplicable" data-ogsc="" style="margin: 0px;">
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></div>
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With Regards,</div>
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-Swagat</div>
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<span style="font-size: 10pt; color: rgb(68, 68, 68); line-height: normal;"><b>Swagat Saurav Mishra</b></span><span style="font-size: 10pt; line-height: normal;">,</span></p>
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<span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">Postdoctoral Research Associate</span></p>
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<span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;"></span><span style="font-size: 11pt; color: rgb(32, 18, 77); line-height: normal;"><br>
</span></p>
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<span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">Particle Cosmology Group, </span></p>
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<span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">Centre for Astronomy and Particle Theory,</span></p>
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<span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">University of Nottingham, Nottingham NG7 2RD, UK.</span></p>
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<span style="font-size: 10pt; color: rgb(0, 0, 0); line-height: normal;">Website</span><span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">:
</span><span style="font-size: 10pt; color: rgb(17, 85, 204); line-height: normal;"><a href="https://swagatam18.wordpress.com/" target="_blank" id="OWAc9f85413-0b8b-66b6-b04b-c91004da7541" class="OWAAutoLink" style="color: rgb(17, 85, 204); margin-top: 0px; margin-bottom: 0px;">https://swagatam18.wordpress.com/</a></span><span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;"> </span></p>
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<span style="font-size: 10pt; color: rgb(0, 0, 0); line-height: normal;">Research Link</span><span style="font-size: 10pt; color: rgb(32, 18, 77); line-height: normal;">:</span><span style="font-size: 10pt; color: rgb(17, 85, 204); line-height: normal;"><a href="https://inspirehep.net/authors/1517353" target="_blank" id="OWA908a020b-bac3-a8ec-bd18-f16bb09fd994" class="OWAAutoLink" style="color: rgb(17, 85, 204); margin-top: 0px; margin-bottom: 0px;">https://inspirehep.net/authors/1517353</a></span></p>
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