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Characters, Quasinormal Modes, and Quantum de Sitter Thermodynamics

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arxiv 2304.01471 v2 pith:5XK7RCLY submitted 2023-04-04 hep-th gr-qc

Y.T. Albert Law This is my paper · ORCID
classification hep-thgr-qc
keywords sittercharactersfieldsloopsphereamountsbrieflycomment
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abstract

In this short note, we review some recent progress in understanding the 1-loop corrections to the Gibbons-Hawking entropy, which amounts to studying free fields on the de Sitter static patch and the round sphere. After briefly surveying the unitary irreducible representations of the de Sitter group $SO(1,d+1)$ and their Harish-Chandra characters, we discuss the Lorentzian interpretation for the 1-loop sphere path integral for a scalar. After that we comment on how the results are modified by edge contributions for spinning fields.

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Cited by 1 Pith paper

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  1. Quasinormal Modes and the Switchback Effect in Schwarzschild-de Sitter

    hep-th 2025-01 conditional novelty 6.0 of 10

    The paper derives eikonal quasinormal mode frequencies and shock-wave switchback delays in Schwarzschild-de Sitter for arbitrary mass, using static-sphere observers and reflecting boundary conditions.

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