Events Daily

Wednesday, October 12, 2022

HEP Journal Club
Event Type: Other
Time: 12:30 PM - 1:30 PM
Location: 726 Broadway, 940, CCPP Seminar

Euclidean wormholes in D>2 quantum gravity
Tom Hartman, Cornell University
Event Type: HEP Seminar
Time: 2:00 PM - 3:30 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: Euclidean wormholes have played an important role in recent progress on 2D gravity and on black hole information in higher dimensions. However, higher topology spacetimes must be interpreted carefully, or they lead to a factorization problem that violates quantum mechanics and AdS/CFT. I will describe the construction of on-shell wormholes in higher dimensions and their interpretation via coarse graining in the dual CFT. In 3D gravity, wormholes correspond to averaged solutions of the 2D conformal bootstrap equations and encode the statistics of OPE coefficients. Single-boundary wormholes lead to a controlled version of the Coleman-Giddings-Strominger mechanism, where the effective gravitational theory has random coupling constants.

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