Large and small corrections to the JLMS Formula from replica wormholes

Abstract The JLMS formula relates the bulk and boundary relative entropies and is fundamental to the holographic dictionary, providing justification for entanglement wedge reconstruction. We revisit the replica trick for relative entropy and find corrections to the JLMS formula in a variety of scena...

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Main Authors: Jonah Kudler-Flam, Pratik Rath
Format: Article
Language:English
Published: SpringerOpen 2022-08-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP08(2022)189
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author Jonah Kudler-Flam
Pratik Rath
author_facet Jonah Kudler-Flam
Pratik Rath
author_sort Jonah Kudler-Flam
collection DOAJ
description Abstract The JLMS formula relates the bulk and boundary relative entropies and is fundamental to the holographic dictionary, providing justification for entanglement wedge reconstruction. We revisit the replica trick for relative entropy and find corrections to the JLMS formula in a variety of scenarios, even after accounting for effects of quantum extremality. We analyze the problem in the PSSY model, a model of Jackiw-Teitelboim gravity coupled to end-of-the-world branes. We find non-perturbative (in G) corrections that are always present, arising from subdominant replica wormhole gravitational saddles that indicate the approximate error-correcting nature of AdS/CFT. Near entanglement phase transitions, these saddles can get enhanced to large corrections. We find O (G −1/2) corrections arising from area fluctuations and O (G −1) corrections from incompressible bulk quantum states. Lastly, we find our most surprising result, an infinite violation of the JLMS formula after the Page time arising from a rank deficiency in the bulk entanglement spectrum. We discuss similar calculations in tensor networks and comment on the implications for bulk reconstruction.
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spelling doaj.art-5a37fcd35a4343638e7980014e4fac5a2022-12-22T02:15:15ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022813210.1007/JHEP08(2022)189Large and small corrections to the JLMS Formula from replica wormholesJonah Kudler-Flam0Pratik Rath1Kadanoff Center for Theoretical Physics, University of ChicagoDepartment of Physics, University of CaliforniaAbstract The JLMS formula relates the bulk and boundary relative entropies and is fundamental to the holographic dictionary, providing justification for entanglement wedge reconstruction. We revisit the replica trick for relative entropy and find corrections to the JLMS formula in a variety of scenarios, even after accounting for effects of quantum extremality. We analyze the problem in the PSSY model, a model of Jackiw-Teitelboim gravity coupled to end-of-the-world branes. We find non-perturbative (in G) corrections that are always present, arising from subdominant replica wormhole gravitational saddles that indicate the approximate error-correcting nature of AdS/CFT. Near entanglement phase transitions, these saddles can get enhanced to large corrections. We find O (G −1/2) corrections arising from area fluctuations and O (G −1) corrections from incompressible bulk quantum states. Lastly, we find our most surprising result, an infinite violation of the JLMS formula after the Page time arising from a rank deficiency in the bulk entanglement spectrum. We discuss similar calculations in tensor networks and comment on the implications for bulk reconstruction.https://doi.org/10.1007/JHEP08(2022)189AdS-CFT Correspondence2D Gravity
spellingShingle Jonah Kudler-Flam
Pratik Rath
Large and small corrections to the JLMS Formula from replica wormholes
Journal of High Energy Physics
AdS-CFT Correspondence
2D Gravity
title Large and small corrections to the JLMS Formula from replica wormholes
title_full Large and small corrections to the JLMS Formula from replica wormholes
title_fullStr Large and small corrections to the JLMS Formula from replica wormholes
title_full_unstemmed Large and small corrections to the JLMS Formula from replica wormholes
title_short Large and small corrections to the JLMS Formula from replica wormholes
title_sort large and small corrections to the jlms formula from replica wormholes
topic AdS-CFT Correspondence
2D Gravity
url https://doi.org/10.1007/JHEP08(2022)189
work_keys_str_mv AT jonahkudlerflam largeandsmallcorrectionstothejlmsformulafromreplicawormholes
AT pratikrath largeandsmallcorrectionstothejlmsformulafromreplicawormholes