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Joint ICTP/SISSA String Seminar
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Joint ICTP/SISSA Pheno Journal Club
Joint ICTP/SISSA String Journal Club
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Wed 31 Thu 1 Fri 2 Sat 3 Sun 4 Mon 5 Tue 6
SISSA room 137

Wednesday 31 May 2023

SISSA room 137 h: 14:00 The Hilbert space of de Sitter quantum gravity
Victor Godet I will describe how the Wheeler-DeWitt equation can be solved in the late-time expansion of an asymptotically de Sitter spacetime. The physical states are found to be wavefunctionals with the same symmetries as CFT partition functions, so that the Hilbert space is "theory space". The inner product can be defined using a suitable procedure to gauge-fix the Weyl and diffeomorphism invariance and the residual conformal symmetry imposes dS invariance. I will discuss how cosmological correlators can be interpreted as gauge-fixed observables and satisfy a cosmological version of the holography of information.
(Tata Inst.)
TPP Group Seminar