Islands in multiverse models

Abstract We consider multiverse models in two-dimensional linear dilaton-gravity theories as toy models of false vacuum eternal inflation. Coupling conformal matter we calculate the Von Neumann entropy of subregions. When these are sufficiently large we find that an island develops covering most of...

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Autores principales:	Sergio E. Aguilar-Gutierrez, Aidan Chatwin-Davies, Thomas Hertog, Natalia Pinzani-Fokeeva, Brandon Robinson
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	2D Gravity Models of Quantum Gravity Black Holes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/c89c48f755e84766b9e47788f1afc2eb
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spelling	oai:doaj.org-article:c89c48f755e84766b9e47788f1afc2eb2021-12-05T12:25:14ZIslands in multiverse models10.1007/JHEP11(2021)2121029-8479https://doaj.org/article/c89c48f755e84766b9e47788f1afc2eb2021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)212https://doaj.org/toc/1029-8479Abstract We consider multiverse models in two-dimensional linear dilaton-gravity theories as toy models of false vacuum eternal inflation. Coupling conformal matter we calculate the Von Neumann entropy of subregions. When these are sufficiently large we find that an island develops covering most of the rest of the multiverse, leading to a Page-like transition. This resonates with a description of multiverse models in semiclassical quantum cosmology, where a measure for local predictions is given by saddle point geometries which coarse-grain over any structure associated with eternal inflation beyond one’s patch.Sergio E. Aguilar-GutierrezAidan Chatwin-DaviesThomas HertogNatalia Pinzani-FokeevaBrandon RobinsonSpringerOpenarticle2D GravityModels of Quantum GravityBlack HolesClassical Theories of GravityNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-41 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2D Gravity Models of Quantum Gravity Black Holes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	2D Gravity Models of Quantum Gravity Black Holes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Sergio E. Aguilar-Gutierrez Aidan Chatwin-Davies Thomas Hertog Natalia Pinzani-Fokeeva Brandon Robinson Islands in multiverse models
description	Abstract We consider multiverse models in two-dimensional linear dilaton-gravity theories as toy models of false vacuum eternal inflation. Coupling conformal matter we calculate the Von Neumann entropy of subregions. When these are sufficiently large we find that an island develops covering most of the rest of the multiverse, leading to a Page-like transition. This resonates with a description of multiverse models in semiclassical quantum cosmology, where a measure for local predictions is given by saddle point geometries which coarse-grain over any structure associated with eternal inflation beyond one’s patch.
format	article
author	Sergio E. Aguilar-Gutierrez Aidan Chatwin-Davies Thomas Hertog Natalia Pinzani-Fokeeva Brandon Robinson
author_facet	Sergio E. Aguilar-Gutierrez Aidan Chatwin-Davies Thomas Hertog Natalia Pinzani-Fokeeva Brandon Robinson
author_sort	Sergio E. Aguilar-Gutierrez
title	Islands in multiverse models
title_short	Islands in multiverse models
title_full	Islands in multiverse models
title_fullStr	Islands in multiverse models
title_full_unstemmed	Islands in multiverse models
title_sort	islands in multiverse models
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/c89c48f755e84766b9e47788f1afc2eb
work_keys_str_mv	AT sergioeaguilargutierrez islandsinmultiversemodels AT aidanchatwindavies islandsinmultiversemodels AT thomashertog islandsinmultiversemodels AT nataliapinzanifokeeva islandsinmultiversemodels AT brandonrobinson islandsinmultiversemodels
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Islands in multiverse models

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