String Theory seminar - Juan Pedraza [NOTE UNUSUAL TIME] Seminar
![](/assets/imported/transforms/site/seminar/PageThumbnail/B25339D43C014620AC4B7DCD76B214AE/string_theory.JPG_SIA_JPG_fit_to_width_MEDIUM.jpg)
- 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.