Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory

In the context of scalar-tensor theories we study the evolution of the density contrast for Jordan-Fierz-Brans-Dicke theories in a Friedmann-Lemaitre-Robertson-Walker universe. Calculations are performed in the Einstein frame with the cosmological background described as Lambda-cold dark matter (Lam...

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Detalles Bibliográficos
Autores: Ruiz Cembranos, José Alberto, Cruz Dombriz, Álvaro de la, Olano Garcia, Leandro
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/35055
Acceso en línea:https://hdl.handle.net/20.500.14352/35055
Access Level:acceso abierto
Palabra clave:53
High-redshift supernovae
Hubble-space-telescope
Dark energy
Cosmological perturbations
Accelerating universe
Relativistic theory
Modified gravity
Machs principle
Field-equations
Cpt violation
Física (Física)
22 Física
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spelling Complete density perturbations in the Jordan-Fierz-Brans-Dicke theoryRuiz Cembranos, José AlbertoCruz Dombriz, Álvaro de laOlano Garcia, Leandro53High-redshift supernovaeHubble-space-telescopeDark energyCosmological perturbationsAccelerating universeRelativistic theoryModified gravityMachs principleField-equationsCpt violationFísica (Física)22 FísicaIn the context of scalar-tensor theories we study the evolution of the density contrast for Jordan-Fierz-Brans-Dicke theories in a Friedmann-Lemaitre-Robertson-Walker universe. Calculations are performed in the Einstein frame with the cosmological background described as Lambda-cold dark matter (Lambda CDM) and supplemented by a Jordan-Fierz-Brans-Dicke field. By using a completely general procedure valid for all scalar-tensor theories, we obtain the exact fourth-order differential equation for the density contrast evolution in modes of arbitrary size. In the case of sub-Hubble modes, the expression reduces to a simpler but still fourth-order equation that is then compared with the standard (quasistatic) approximation. Differences with respect to the evolution as predicted by the standard concordance Lambda CDM model are observed depending on the value of the coupling.American Physical SocietyUniversidad Complutense de Madrid20132013-12-1520132013-12-15journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/35055reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/350552026-06-02T12:44:21Z
dc.title.none.fl_str_mv Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
title Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
spellingShingle Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
Ruiz Cembranos, José Alberto
53
High-redshift supernovae
Hubble-space-telescope
Dark energy
Cosmological perturbations
Accelerating universe
Relativistic theory
Modified gravity
Machs principle
Field-equations
Cpt violation
Física (Física)
22 Física
title_short Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
title_full Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
title_fullStr Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
title_full_unstemmed Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
title_sort Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
dc.creator.none.fl_str_mv Ruiz Cembranos, José Alberto
Cruz Dombriz, Álvaro de la
Olano Garcia, Leandro
author Ruiz Cembranos, José Alberto
author_facet Ruiz Cembranos, José Alberto
Cruz Dombriz, Álvaro de la
Olano Garcia, Leandro
author_role author
author2 Cruz Dombriz, Álvaro de la
Olano Garcia, Leandro
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
High-redshift supernovae
Hubble-space-telescope
Dark energy
Cosmological perturbations
Accelerating universe
Relativistic theory
Modified gravity
Machs principle
Field-equations
Cpt violation
Física (Física)
22 Física
topic 53
High-redshift supernovae
Hubble-space-telescope
Dark energy
Cosmological perturbations
Accelerating universe
Relativistic theory
Modified gravity
Machs principle
Field-equations
Cpt violation
Física (Física)
22 Física
description In the context of scalar-tensor theories we study the evolution of the density contrast for Jordan-Fierz-Brans-Dicke theories in a Friedmann-Lemaitre-Robertson-Walker universe. Calculations are performed in the Einstein frame with the cosmological background described as Lambda-cold dark matter (Lambda CDM) and supplemented by a Jordan-Fierz-Brans-Dicke field. By using a completely general procedure valid for all scalar-tensor theories, we obtain the exact fourth-order differential equation for the density contrast evolution in modes of arbitrary size. In the case of sub-Hubble modes, the expression reduces to a simpler but still fourth-order equation that is then compared with the standard (quasistatic) approximation. Differences with respect to the evolution as predicted by the standard concordance Lambda CDM model are observed depending on the value of the coupling.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-12-15
2013
2013-12-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/35055
url https://hdl.handle.net/20.500.14352/35055
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
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
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score 15,300719

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