![School of Natural Sciences Event](/sites/default/files/styles/two_column_medium/public/2019-09/sns_default.jpg?itok=IEu1CLXj)
Princeton University Gravity Initiative Fall Seminar Series
Harish-Chandra characters, de Sitter Quasinormal Modes and Sphere Partition Functions
Harish-Chandra characters generalize the ordinary group characters to infinite dimensional representations of noncompact Lie groups.
In this talk, I first review the Harish-Chandra characters of de Sitter isometry group. Then I will show that these Harish-Chandra characters count quasinormal modes in the static patch of de Sitter spacetime, and they capture the one-loop sphere partition function of arbitrary effective field theory including gravity. These partition functions can be used to test microscopic models of de Sitter quantum gravity.
Date & Time
October 11, 2021 | 12:30pm – 1:30pm
Location
Jadwin, 4th floor or ZoomSpeakers
Zimo Sun
Affiliation
Princeton University