Pratik Rath 博士学术报告

Title: Hollow-grams: Generalized Entanglement Wedges from the Gravitational Path Integral

Speaker: Pratik Rath

Affiliation: University of California, Berkeley, USA（美国加利福尼亚大学伯克利分校）

Time: 19:00 - 20:00, Friday, 23rd January, 2025 (UTC+8, Beijing Time)

Venue: Zoom Meeting (ID: 385 442 0225; Passcode: yauc)

Inviter: Qiang Wen (文强)

Abstract

Recently, Bousso and Penington (BP) made a proposal for the entanglement wedge associated to a gravitating bulk region. In this talk, I will derive this proposal in time-reflection symmetric settings using the gravitational path integral. To do this, we exploit the connection between random tensor networks (RTNs) and fixed-geometry states in gravity. By then expressing a general holographic state as a superposition over fixed-geometry states and using a diagonal approximation, we provide a general gravitational path integral derivation of the BP proposal. We demonstrate that the saddles computing the Rényi entropy depend on how the bulk region is gauge-invariantly specified. Nevertheless, we show that the BP proposal is universally reproduced in the n→1 limit.

Speaker

Dr. Pratik Rath got his Bachelor's degree from IIT Kanpur, Master's degree from Perimeter Institute, and PhD  from UC Berkeley. He was a post-doctor of UCSB. Now he works at UC Berkeley. His research interest lies within our understanding of quantum gravity through AdS/CFT and quantum information.

The seminar will be broadcasted online by Zoom.

Interested people are free to join, without registration in advance.

The Zoom info is

URL: https://us02web.zoom.us/j/3854420225?pwd=SXY4eWJKOTBFZWJDaE16aXpTamY1QT09

Meeting ID: 385 442 0225

Passcode: yauc