Semiclassical constant-density spheres in a regularized Polyakov approximation

We provide an exhaustive analysis of the complete set of solutions of the equations of stellar equilibrium under semiclassical effects. As classical matter we use a perfect fluid of constant density; as the semiclassical source we use the renormalized stress-energy tensor (RSET) of a minimally coupl...

Descripción completa

Detalles Bibliográficos
Autores: Arrechea, Julio, Barceló, Carlos, Carballo Rubio, Raúl, Garay Elizondo, Luis Javier
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/115444
Acceso en línea:https://hdl.handle.net/20.500.14352/115444
Access Level:acceso abierto
Palabra clave:53
Electromagnetic stress tensor
Black hole
Gravitational vacuum
Energy tensor
Space
Equations
Gravity
Field
Polarization
Geometry
Física (Física)
2212 Física Teórica
id ES_44cb1e2f7e80a57c19d779d9b9ac0a7b
oai_identifier_str oai:docta.ucm.es:20.500.14352/115444
network_acronym_str ES
network_name_str España
repository_id_str
spelling Semiclassical constant-density spheres in a regularized Polyakov approximationArrechea, JulioBarceló, CarlosCarballo Rubio, RaúlGaray Elizondo, Luis Javier53Electromagnetic stress tensorBlack holeGravitational vacuumEnergy tensorSpaceEquationsGravityFieldPolarizationGeometryFísica (Física)2212 Física TeóricaWe provide an exhaustive analysis of the complete set of solutions of the equations of stellar equilibrium under semiclassical effects. As classical matter we use a perfect fluid of constant density; as the semiclassical source we use the renormalized stress-energy tensor (RSET) of a minimally coupled massless scalar field in the Boulware vacuum (the only vacuum consistent with asymptotic flatness and staticity). For the RSET we use a regularized version of the Polyakov approximation. We present a complete catalogue of the semiclassical self-consistent solutions which incorporates regular as well as singular solutions, showing that the semiclassical corrections are highly relevant in scenarios of high compactness. Semiclassical corrections allow the existence of ultracompact equilibrium configurations which have bounded pressures and masses up to a central core of Planckian radius, precisely where the regularized Polyakov approximation is not accurate. Our analysis strongly suggests the absence of a Buchdahl limit in semiclasical gravity, while indicating that the regularized Polyakov approximation used here must be improved to describe equilibrium configurations of arbitrary compactness that remain regular at the center of spherical symmetry.American Physical SocietyUniversidad Complutense de Madrid20212021-01-0120212021-01-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/115444reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 FIS2017-86497-C2-1-P UNIVERSO Y VACIO CUANTICOSAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 FIS2017-86497-C2-2-P UNIVERSO Y VACIO CUANTICOS: GRAVEDADES MULTIESCALA, COSMOLOGIA CUANTICA DE LAZOS Y AGUJEROS NEGROSAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-118159GB-C43 EL UNIVERSO CUANTICO GRAVITATACIONAL: ESPACIOTIEMPOS EFECTIVOS Y SUS FLUCTUACIONES CUANTICASAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-118159GB-C44 UNIVERSO CUANTICO GRAVITATORIO: CAMPOS, LAZOS Y GRAVEDAD DE WEYLAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-107847RB-C44 ASTRONOMIA DE RAYOS GAMMA CON MAGIC Y CTA-NORTE - CONTRIBUCION DEL IAA-CSICAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 SEV-2017-0709-21-2open accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1154442026-06-02T12:44:21Z
dc.title.none.fl_str_mv Semiclassical constant-density spheres in a regularized Polyakov approximation
title Semiclassical constant-density spheres in a regularized Polyakov approximation
spellingShingle Semiclassical constant-density spheres in a regularized Polyakov approximation
Arrechea, Julio
53
Electromagnetic stress tensor
Black hole
Gravitational vacuum
Energy tensor
Space
Equations
Gravity
Field
Polarization
Geometry
Física (Física)
2212 Física Teórica
title_short Semiclassical constant-density spheres in a regularized Polyakov approximation
title_full Semiclassical constant-density spheres in a regularized Polyakov approximation
title_fullStr Semiclassical constant-density spheres in a regularized Polyakov approximation
title_full_unstemmed Semiclassical constant-density spheres in a regularized Polyakov approximation
title_sort Semiclassical constant-density spheres in a regularized Polyakov approximation
dc.creator.none.fl_str_mv Arrechea, Julio
Barceló, Carlos
Carballo Rubio, Raúl
Garay Elizondo, Luis Javier
author Arrechea, Julio
author_facet Arrechea, Julio
Barceló, Carlos
Carballo Rubio, Raúl
Garay Elizondo, Luis Javier
author_role author
author2 Barceló, Carlos
Carballo Rubio, Raúl
Garay Elizondo, Luis Javier
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Electromagnetic stress tensor
Black hole
Gravitational vacuum
Energy tensor
Space
Equations
Gravity
Field
Polarization
Geometry
Física (Física)
2212 Física Teórica
topic 53
Electromagnetic stress tensor
Black hole
Gravitational vacuum
Energy tensor
Space
Equations
Gravity
Field
Polarization
Geometry
Física (Física)
2212 Física Teórica
description We provide an exhaustive analysis of the complete set of solutions of the equations of stellar equilibrium under semiclassical effects. As classical matter we use a perfect fluid of constant density; as the semiclassical source we use the renormalized stress-energy tensor (RSET) of a minimally coupled massless scalar field in the Boulware vacuum (the only vacuum consistent with asymptotic flatness and staticity). For the RSET we use a regularized version of the Polyakov approximation. We present a complete catalogue of the semiclassical self-consistent solutions which incorporates regular as well as singular solutions, showing that the semiclassical corrections are highly relevant in scenarios of high compactness. Semiclassical corrections allow the existence of ultracompact equilibrium configurations which have bounded pressures and masses up to a central core of Planckian radius, precisely where the regularized Polyakov approximation is not accurate. Our analysis strongly suggests the absence of a Buchdahl limit in semiclasical gravity, while indicating that the regularized Polyakov approximation used here must be improved to describe equilibrium configurations of arbitrary compactness that remain regular at the center of spherical symmetry.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/115444
url https://hdl.handle.net/20.500.14352/115444
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 FIS2017-86497-C2-1-P UNIVERSO Y VACIO CUANTICOS
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 FIS2017-86497-C2-2-P UNIVERSO Y VACIO CUANTICOS: GRAVEDADES MULTIESCALA, COSMOLOGIA CUANTICA DE LAZOS Y AGUJEROS NEGROS
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-118159GB-C43 EL UNIVERSO CUANTICO GRAVITATACIONAL: ESPACIOTIEMPOS EFECTIVOS Y SUS FLUCTUACIONES CUANTICAS
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-118159GB-C44 UNIVERSO CUANTICO GRAVITATORIO: CAMPOS, LAZOS Y GRAVEDAD DE WEYL
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-107847RB-C44 ASTRONOMIA DE RAYOS GAMMA CON MAGIC Y CTA-NORTE - CONTRIBUCION DEL IAA-CSIC
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 SEV-2017-0709-21-2
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
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 reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407117814792192
score 15,81155

Similares en LA Referencia