This week

Wednesday

The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole

Regular Seminar Henry Maxfield (UCSB)

at:
14:00 IC
room H503
abstract:

Semiclassical gravity is famously in tension with the unitary evolution of quantum mechanics when black holes evaporate. I'll describe a semiclassical calculation that nonetheless reproduces signatures of unitarity, namely the "Page curve" of entropy and the Hayden-Preskill protocol. This involves finding a quantum extremal surface, an extremum of the generalised entropy (the area in Planck units plus the entropy of exterior matter), which in the context of an evaporating black hole can exist far from a classical extremal surface. The calculations are performed in an exactly solvable model of Jackiw-Teitelboim gravity coupled to conformal matter. I will conclude by commenting and speculating on the implications for the information paradox.

Thursday

Defects in topological and conformal field theory

Conference Two day meeting Thursday and Friday (For speakers, see the website)

at:
13:00 KCL
room See website
abstract:

This is a two day meeting, please see the website for details. www.tinyurl.com/kcldef19 Registration is required as King's has a new policy on attendance. Supported by the LMS and the IoP

Conferences

27.06.2019 - 28.06.2019

Defects in topological and conformal field theory

2019-06-27 - 2019-06-28 at KCL

description:

This is a two-day meeting on Defects in topological and conformal field theory, starting on Thursday at 13:00 and ending on Friday c. 16:00.

Please note that registration is required as King's has a new policy on seminar attendance and that unregistered people may find it difficult to get in.

link