[QG-AA] Global symmetry, Euclidean gravity, and the black hole information problem

by Prof. Daniel Harlow (MIT)

Wednesday 2 Dec 2020, 18:00 → 19:30 Europe/Berlin

TPI, FSU Jena

In this talk I will show how the essential ingredients of recent calculations of the Page curve of an evaporating black hole can be used to generalize a recent argument against global symmetries beyond the AdS/CFT correspondence to more realistic theories of quantum gravity, illustrating a close connection between the absence of global symmetries and a unitary resolution of the black hole information problem. I'll also give several low-dimensional examples of quantum gravity theories which do not have a unitary resolution of the black hole information problem, and which therefore can and do have global symmetries. Motivated by this discussion, I'll conjecture that in a certain sense Euclidean quantum gravity is equivalent to holography.  Based on recent work with Edgar Shaghoulian.

Join Zoom Meeting
https://uni-jena-de.zoom.us/j/96109736559

Meeting ID: 961 0973 6559
Passcode: 362624