Events

 
<< September 2026 >>
 
 >>
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
   1   2   3   4   5 
 6   7   8   9   10   11   12 
 13   14   15   16   17   18   19 
 20   21   22   23   24   25   26 
 27   28   29   30   
 
Add an Event Edit this Event
<< Summer 2026 Fall 2026 Spring 2027 >>
Subscribe your calendar or receive email announcements of events
Theory Seminar (High Energy/Cosmology)
De Sitter shockwave and static patch holography
Date: Monday, September 14th
Time: 1:00 pm - 2:30 pm
Place: Chamberlin 5280
Speaker: Yiming Chen, Stanford University
Abstract: We study a version of de Sitter static patch holography in which the Euclidean gravitational path integral, with an observer worldline included, is conjectured to compute a trace. Motivated by recent evidence for this conjecture from the sphere path integral, we test it further by inserting operators along the observer worldline and computing two-point functions and out-of-time-ordered four-point correlators (OTOCs). Building on earlier work, we compute the OTOC using the shockwave formalism, incorporating both observer recoil and gravitational backreaction. I will explain that the OTOC conflicts with two basic properties of a trace in a Hilbert space: cyclicity and positivity. This talk is based on arXiv:2607.14042.
Host: Jakob Moritz
Add this event to your calendar