High Energy Physics Seminar
Online and In-Person Event
Black Hole Information and Replica Wormholes
Stephen Hsu,
Michigan State University,
We discuss recent applications of Euclidean path integrals to the black hole information problem. In calculations with replica wormholes as the next-to-leading order correction to the Gibbons-Hawking saddlepoint, the radiation density matrix approaches a pure state at
late times, following the Page curve. We compare unitary evaporation of black holes (in real time), mediated by calculable quantum hair effects, with the replica wormhole results. Both replica wormhole and quantum hair approaches imply that radiation states are macroscopic
superpositions of spacetime backgrounds, invalidating firewall and monogamy of entanglement constructions.
The talk is in 469 Lauritsen.
Contact theoryinfo@caltech.edu for Zoom link.
For more information, please visit https://www.theory.caltech.edu/seminars/high-energy-physics-seminars.