Mathematical and Theoretical Physics Seminar: The OPE Randomness Hypothesis and Euclidean Wormholes

Speaker Alex Belin (CERN)
Date: 2/25/2021
Time: 1 p.m.
Location: via zoom
Event Contact: Janice Benner
Sponsor: The Math and Physics Departments
Event Type: Ceremony/Service

Recent developments in holography indicate that the semi-classical Euclidean path-integral of Einstein gravity is much more powerful than previously anticipated. It is capable of reproducing a unitary Page curve for black hole evaporation, and can even capture some features of the discreten nature of black hole microstates. Wormhole geometries play a key role in this context. I will propose a mechanism to explain this in the CFT: the OPE Randomness Hypothesis. This ansatz is a generalization of the Eigenstate Thermalization Hypothesis which applies to chaotic CFTs, and treats OPE coefficients of heavy operators as random variables with a given probability distribution. I will present two applications of this framework: First, it resolves a puzzle in AdS_3/CFT_2 due to the genus-2 wormhole, as raised by Maoz and Maldacena. Second, it provides an argument against global symmetries in quantum gravity.

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