[HEG] Hollow-grams: Generalized Entanglement Wedges from the Gravitational Path Integral

Who: Pratik Rath (UC Berkeley)
When: Friday, November 14, 12:30 pm (note the unusual time)
Where: Broida 3302
Title: Hollow-grams: Generalized Entanglement Wedges from the Gravitational Path Integral
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.