Grey-body factors, irreversibility and multiple island saddles

Hollowood, Timothy; Kumar, Prem; Legramandi, Andrea; Talwar, Neil

doi:10.1007/jhep03(2022)110

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Grey-body factors, irreversibility and multiple island saddles

Timothy Hollowood

, Prem Kumar

, Andrea Legramandi, Neil Talwar

Journal of High Energy Physics, Volume: 2022, Issue: 3

Swansea University Authors: Timothy Hollowood , Prem Kumar

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DOI (Published version): 10.1007/jhep03(2022)110

Abstract

We consider the effect of grey-body factors on the entanglement island prescription for computing the entropy of an arbitrary subset of the Hawking radiation of an evaporating black hole. When there is a non-trivial grey-body factor, the modes reflected back into the black hole affect the position o...

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Published in:	Journal of High Energy Physics
ISSN:	1029-8479
Published:	Springer Science and Business Media LLC 2022
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa58623
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first_indexed	2021-11-29T15:33:24Z
last_indexed	2023-01-11T14:39:20Z
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spelling	2022-10-25T14:14:44.5561237 v2 58623 2021-11-11 Grey-body factors, irreversibility and multiple island saddles ea9ca59fc948276ff2ab547e91bdf0c2 0000-0002-3258-320X Timothy Hollowood Timothy Hollowood true false 087fd097167d724ce1b13cb285741ef5 0000-0003-0867-4213 Prem Kumar Prem Kumar true false 2021-11-11 SPH We consider the effect of grey-body factors on the entanglement island prescription for computing the entropy of an arbitrary subset of the Hawking radiation of an evaporating black hole. When there is a non-trivial grey-body factor, the modes reflected back into the black hole affect the position of the quantum extremal surfaces at a subleading level with respect to the scrambling time. The grey-body factor allows us to analyse the role of irreversibility in the evaporation. In particular, we show that irreversibility allows multiple saddles to dominate the entropy, rather than just two as expected on the basis of Page’s theorem. We show that these multiple saddles can be derived from a generalization of Page’s theorem that involves a nested temporal sequence of unitary averages. We then consider how irreversibility affects the monogamy entanglement problem. Journal Article Journal of High Energy Physics 2022 3 Springer Science and Business Media LLC 1029-8479 Black Holes; 2D Gravity 17 3 2022 2022-03-17 10.1007/jhep03(2022)110 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Article funded by SCOAP3 2022-10-25T14:14:44.5561237 2021-11-11T16:16:16.4601834 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Timothy Hollowood 0000-0002-3258-320X 1 Prem Kumar 0000-0003-0867-4213 2 Andrea Legramandi 3 Neil Talwar 4 58623__23764__b573204666194c5d95c0ce1cefbf1e0e.pdf 58623.pdf 2022-04-01T17:17:57.1008583 Output 731000 application/pdf Version of Record true Copyright: The Authors. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) true eng http://creativecommons.org/licenses/by/4.0/
title	Grey-body factors, irreversibility and multiple island saddles
spellingShingle	Grey-body factors, irreversibility and multiple island saddles Timothy Hollowood Prem Kumar
title_short	Grey-body factors, irreversibility and multiple island saddles
title_full	Grey-body factors, irreversibility and multiple island saddles
title_fullStr	Grey-body factors, irreversibility and multiple island saddles
title_full_unstemmed	Grey-body factors, irreversibility and multiple island saddles
title_sort	Grey-body factors, irreversibility and multiple island saddles
author_id_str_mv	ea9ca59fc948276ff2ab547e91bdf0c2 087fd097167d724ce1b13cb285741ef5
author_id_fullname_str_mv	ea9ca59fc948276ff2ab547e91bdf0c2_*_Timothy Hollowood 087fd097167d724ce1b13cb285741ef5_*_Prem Kumar
author	Timothy Hollowood Prem Kumar
author2	Timothy Hollowood Prem Kumar Andrea Legramandi Neil Talwar
format	Journal article
container_title	Journal of High Energy Physics
container_volume	2022
container_issue	3
publishDate	2022
institution	Swansea University
issn	1029-8479
doi_str_mv	10.1007/jhep03(2022)110
publisher	Springer Science and Business Media LLC
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str	1
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description	We consider the effect of grey-body factors on the entanglement island prescription for computing the entropy of an arbitrary subset of the Hawking radiation of an evaporating black hole. When there is a non-trivial grey-body factor, the modes reflected back into the black hole affect the position of the quantum extremal surfaces at a subleading level with respect to the scrambling time. The grey-body factor allows us to analyse the role of irreversibility in the evaporation. In particular, we show that irreversibility allows multiple saddles to dominate the entropy, rather than just two as expected on the basis of Page’s theorem. We show that these multiple saddles can be derived from a generalization of Page’s theorem that involves a nested temporal sequence of unitary averages. We then consider how irreversibility affects the monogamy entanglement problem.
published_date	2022-03-17T04:15:17Z
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score	11.037056

Grey-body factors, irreversibility and multiple island saddles

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