Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations

We consider the linearized semiclassical Einstein equations for small deviations around de Sitter spacetime including the vacuum polarization effects of conformal fields. Employing the method of order reduction, we find the exact solutions for general metric perturbations (of scalar, vector and tens...

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Detalhes bibliográficos
Autores: Fröb, Markus Benjamin, Papadopoulos, Demetrios B., Roura Crumols, Albert, Verdaguer Oms, Enric, 1950-
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/53286
Acesso em linha:https://hdl.handle.net/2445/53286
Access Level:acceso abierto
Palavra-chave:Cosmologia quàntica
Teoria quàntica de camps
Gravetat quàntica
Equacions de camp d'Einstein
Quantum cosmology
Quantum field theory
Quantum gravity
Einstein field equations
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spelling Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviationsFröb, Markus BenjaminPapadopoulos, Demetrios B.Roura Crumols, AlbertVerdaguer Oms, Enric, 1950-Cosmologia quànticaTeoria quàntica de campsGravetat quànticaEquacions de camp d'EinsteinQuantum cosmologyQuantum field theoryQuantum gravityEinstein field equationsWe consider the linearized semiclassical Einstein equations for small deviations around de Sitter spacetime including the vacuum polarization effects of conformal fields. Employing the method of order reduction, we find the exact solutions for general metric perturbations (of scalar, vector and tensor type). Our exact (nonperturbative) solutions show clearly that in this case de Sitter is stable with respect to small metric deviations and a late-time attractor. Furthermore, they also reveal a breakdown of perturbative solutions for a sufficiently long evolution inside the horizon. Our results are valid for any conformal theory, even self-interacting ones with arbitrarily strong coupling.American Physical Society2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/53286Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevD.87.064019Physical Review D, 2013, vol. 87, p. 064019-1-064019-19http://dx.doi.org/10.1103/PhysRevD.87.064019(c) American Physical Society, 2013info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/532862026-05-27T06:46:51Z
dc.title.none.fl_str_mv Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
title Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
spellingShingle Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
Fröb, Markus Benjamin
Cosmologia quàntica
Teoria quàntica de camps
Gravetat quàntica
Equacions de camp d'Einstein
Quantum cosmology
Quantum field theory
Quantum gravity
Einstein field equations
title_short Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
title_full Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
title_fullStr Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
title_full_unstemmed Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
title_sort Nonperturbative semiclassical stability of de Sitter spacetime for small metric deviations
dc.creator.none.fl_str_mv Fröb, Markus Benjamin
Papadopoulos, Demetrios B.
Roura Crumols, Albert
Verdaguer Oms, Enric, 1950-
author Fröb, Markus Benjamin
author_facet Fröb, Markus Benjamin
Papadopoulos, Demetrios B.
Roura Crumols, Albert
Verdaguer Oms, Enric, 1950-
author_role author
author2 Papadopoulos, Demetrios B.
Roura Crumols, Albert
Verdaguer Oms, Enric, 1950-
author2_role author
author
author
dc.subject.none.fl_str_mv Cosmologia quàntica
Teoria quàntica de camps
Gravetat quàntica
Equacions de camp d'Einstein
Quantum cosmology
Quantum field theory
Quantum gravity
Einstein field equations
topic Cosmologia quàntica
Teoria quàntica de camps
Gravetat quàntica
Equacions de camp d'Einstein
Quantum cosmology
Quantum field theory
Quantum gravity
Einstein field equations
description We consider the linearized semiclassical Einstein equations for small deviations around de Sitter spacetime including the vacuum polarization effects of conformal fields. Employing the method of order reduction, we find the exact solutions for general metric perturbations (of scalar, vector and tensor type). Our exact (nonperturbative) solutions show clearly that in this case de Sitter is stable with respect to small metric deviations and a late-time attractor. Furthermore, they also reveal a breakdown of perturbative solutions for a sufficiently long evolution inside the horizon. Our results are valid for any conformal theory, even self-interacting ones with arbitrarily strong coupling.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/53286
url https://hdl.handle.net/2445/53286
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevD.87.064019
Physical Review D, 2013, vol. 87, p. 064019-1-064019-19
http://dx.doi.org/10.1103/PhysRevD.87.064019
dc.rights.none.fl_str_mv (c) American Physical Society, 2013
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2013
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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