July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Black hole unitarity via small couplings: basic postulates to soft quantum structure

Aug 3, 2017, 1:30 PM
55m
1 East (Fermi National Accelerator Laboratory)

1 East

Fermi National Accelerator Laboratory

Kirk Road & Pine Street Batavia, IL 60510-5011
Presentation Field and String Theory Field and String Theory

Speaker

Prof. Steve Giddings (Department of Physics, University of California, Santa Barbara)

Description

The problem of preserving unitary evolution in the presence of an evaporating black hole remains a key problem in quantum gravity, expected to point to new fundamental principles. It has been argued that unitary evolution implies breakdown of spacetime at the horizon (a “firewall”), or other large near-horizon effects. I explore a basic set of postulates, including a “correspondence principle” for observers falling into large black holes, and find the possibility that unitarization occurs via weak interactions between quantum states of a black hole and degrees of freedom in its environment.

Primary author

Prof. Steve Giddings (Department of Physics, University of California, Santa Barbara)

Presentation materials