ICTS:29453

Video URL

Precision tests of bulk entanglement entropy

Precision tests of bulk entanglement entropy

(2024). Precision tests of bulk entanglement entropy. SciVideos. https://youtube.com/live/rQStZWm9fzM

Precision tests of bulk entanglement entropy. SciVideos, Aug. 28, 2024, https://youtube.com/live/rQStZWm9fzM 

          @misc{ scivideos_ICTS:29453,
            doi = {},
            url = {https://youtube.com/live/rQStZWm9fzM},
            author = {},
            keywords = {},
            language = {en},
            title = {Precision tests of bulk entanglement entropy},
            publisher = {},
            year = {2024},
            month = {aug},
            note = {ICTS:29453 see, \url{https://scivideos.org/icts-tifr/29453}}
          }
Justin David
Talk numberICTS:29453
Source RepositoryICTS-TIFR
Source EventQuantum Information, Quantum Field Theory and Gravity
Collection

Abstract

We consider linear superpositions of single particle excitations in a scalar field theory on AdS3 and evaluate their contribution to the bulk entanglement entropy across the Ryu-Takayanagi surface. We compare the entanglement entropy of these excitations obtained using the Faulkner-Lewkowycz-Maldacena formula to the entanglement entropy of linear superposition of global descendants of a conformal primary in a large c CFT obtained using the replica trick. We show that the closed from expressions for the entanglement entropy in the small interval expansion both in gravity and the CFT precisely agree. The agreement serves as a non-trivial check of the FLM formula for the quantum corrections to holographic entropy which also involves a contribution from the back reacted minimal area. Our checks includes an example in which the state is time dependent and spatially in-homogenous as well another example involving a coherent state with a Bañados geometry as its holographic dual.