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The University of Southampton
STAG Research Centre

String Theory seminar - Juan Pedraza [NOTE UNUSUAL TIME] Seminar

Time:
14:00
Date:
20 May 2020
Venue:
Online seminar

For more information regarding this seminar, please email David Turton at [email protected] .

Event details

Title: Local quenches, bulk entanglement entropy and a unitary Page curve

Abstract: Quantum corrections to the entanglement entropy of matter fields interacting with dynamical gravity have proven to be very important in the study of the black hole information problem. We consider a one-particle excited state of a massive scalar field infalling in a pure AdS3 geometry and compute these corrections for bulk subregions anchored on the AdS boundary. In the dual CFT2, the state is given by the insertion of a local primary operator and its evolution thereafter. We calculate the area and bulk entanglement entropy corrections at order O(N^0), both in AdS and its CFT dual. The two calculations match, thus providing a non-trivial check of the FLM formula in a dynamical setting. Further, we observe that the bulk entanglement entropy follows a Page curve. We explain the precise sense in which our setup can be interpreted as a simple model of black hole evaporation and comment on the implications for the information problem.

Speaker information

Juan Pedraza , UCL.

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