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Event Series Event Series: General Relativity Seminar

Real-time observables in horizon thermodynamics

May 7, 2024 @ 2:00 pm - 3:00 pm

General Relativity Seminar

Speaker: Albert Law, Stanford

Title: Real-time observables in horizon thermodynamics

Abstract: Euclidean black hole 1-loop determinants have recently been shown to compute a renormalized thermal canonical partition function for free fields in Lorentzian signature. A key ingredient is a ‘quasinormal mode (QNM) character’, whose Fourier transform equals the renormalized spectral density of the single-particle Hamiltonian. Using a static patch in de Sitter space as an example, in this talk, I will offer new perspectives on the QNM character, including its connection with the local density of states for the single-particle quantum mechanical problem associated with the Klein-Gordon equation, and its direct relationships with (thermal) correlators of the free fields. I will discuss how these considerations might point toward a generalization to interacting theories.


May 7, 2024
2:00 pm - 3:00 pm
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