Time: 14:00 (UTC/GMT+08:00, Beijing/Shanghai), Nov. 13 (Fri.), 2020

Online Meeting Room (zoom.com):  Click here to join the meeting

Meeting ID: 994 1787 3144

Password: 1234

Speaker: Yang Zhou  (Fudan)

Abstract:

Black hole information paradox is a problem over 40 years. Recent progress shows hint towards a new understanding of the black hole interior as part of the Hawking radiation, which they called island. In particular the island formula for the Von Neumann entropy of Hawking radiation is consistent with unitarity. In this talk I will discuss how to extract more information of the island by computing the correlation in Hawking radiation. In particular we study reflected entropy (as a correlation measure of mixed states) and propose a quantum extremal surface for reflected entropy. Based on that, we find a formula for reflected entropy with island cross section as its area term in gravitational system.

Invited by Prof. Cheng Peng