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SUMMARY:De Sitter Horizon Edge Partition Functions - Albert Law\, Stanford
  University
DTSTART:20250123T130000Z
DTEND:20250123T140000Z
UID:TALK225268@talks.cam.ac.uk
CONTACT:122734
DESCRIPTION:Discrepancies between Lorentzian and Euclidean one-loop calcul
 ations in de Sitter thermodynamics suggest the existence of “edge modes
 ” residing on the bifurcate horizon. In this talk\, I will review these 
 calculations and present progress in understanding these edge degrees of f
 reedom. Specifically\, for p-form tensor gauge theories\, edge modes manif
 est as large gauge transformations supported on the stretched horizon. For
  totally symmetric tensor gauge fields on Sd+1\, their edge partition func
 tions receive contributions from lower-spin\, shift-symmetric fields on Sd
 -1 that nonlinearly realize the global higher-spin symmetries. In the case
  of linearized gravity\, I will discuss a plausible interpretation involvi
 ng an embedded spherical brane. This plethora of structures hints at a ric
 h interplay between de Sitter horizon thermodynamics\, symmetry breaking\,
  and edge mode physics.
LOCATION:Potter Room (B1.19)
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