Cosmological evolution in vector-tensor theories of gravity

We present a detailed study of the cosmological evolution in general vector-tensor theories of gravity without potential terms. We consider the evolution of the vector field throughout the expansion history of the Universe and carry out a classification of models according to the behavior of the vec...

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Detalhes bibliográficos
Autores: López Maroto, Antonio, Beltrán Jiménez, José
Formato: artículo
Fecha de publicación:2009
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44340
Acesso em linha:https://hdl.handle.net/20.500.14352/44340
Access Level:acceso abierto
Palavra-chave:53
Preferred-Frame Theories
Probe Wmap Observations
Equation of-State
Dark Energy
Relativistic Gravity
Conservation Laws
Constraints
Supernovae
Inflation
Space
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/44340
network_acronym_str ES
network_name_str España
repository_id_str
spelling Cosmological evolution in vector-tensor theories of gravityLópez Maroto, AntonioBeltrán Jiménez, José53Preferred-Frame TheoriesProbe Wmap ObservationsEquation of-StateDark EnergyRelativistic GravityConservation LawsConstraintsSupernovaeInflationSpaceFísica (Física)22 FísicaWe present a detailed study of the cosmological evolution in general vector-tensor theories of gravity without potential terms. We consider the evolution of the vector field throughout the expansion history of the Universe and carry out a classification of models according to the behavior of the vector field in each cosmological epoch. We also analyze the case in which the Universe is dominated by the vector field, performing a complete analysis of the system phase map and identifying those attracting solutions which give rise to accelerated expansion. Moreover, we consider the evolution in a universe filled with a pressureless fluid in addition to the vector field and study the existence of attractors in which we can have a transition from matter domination to vector domination with accelerated expansion so that the vector field may play the role of dark energy. We find that the existence of solutions with late-time accelerated expansion is a generic prediction of vector tensor theories and that such solutions typically lead to the presence of future singularities. Finally, limits from local gravity tests are used to get constraints on the value of the vector field at small (Solar System) scales.Amer Physical SocUniversidad Complutense de Madrid20092009-09-0120092009-09-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44340reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/443402026-06-02T12:44:21Z
dc.title.none.fl_str_mv Cosmological evolution in vector-tensor theories of gravity
title Cosmological evolution in vector-tensor theories of gravity
spellingShingle Cosmological evolution in vector-tensor theories of gravity
López Maroto, Antonio
53
Preferred-Frame Theories
Probe Wmap Observations
Equation of-State
Dark Energy
Relativistic Gravity
Conservation Laws
Constraints
Supernovae
Inflation
Space
Física (Física)
22 Física
title_short Cosmological evolution in vector-tensor theories of gravity
title_full Cosmological evolution in vector-tensor theories of gravity
title_fullStr Cosmological evolution in vector-tensor theories of gravity
title_full_unstemmed Cosmological evolution in vector-tensor theories of gravity
title_sort Cosmological evolution in vector-tensor theories of gravity
dc.creator.none.fl_str_mv López Maroto, Antonio
Beltrán Jiménez, José
author López Maroto, Antonio
author_facet López Maroto, Antonio
Beltrán Jiménez, José
author_role author
author2 Beltrán Jiménez, José
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Preferred-Frame Theories
Probe Wmap Observations
Equation of-State
Dark Energy
Relativistic Gravity
Conservation Laws
Constraints
Supernovae
Inflation
Space
Física (Física)
22 Física
topic 53
Preferred-Frame Theories
Probe Wmap Observations
Equation of-State
Dark Energy
Relativistic Gravity
Conservation Laws
Constraints
Supernovae
Inflation
Space
Física (Física)
22 Física
description We present a detailed study of the cosmological evolution in general vector-tensor theories of gravity without potential terms. We consider the evolution of the vector field throughout the expansion history of the Universe and carry out a classification of models according to the behavior of the vector field in each cosmological epoch. We also analyze the case in which the Universe is dominated by the vector field, performing a complete analysis of the system phase map and identifying those attracting solutions which give rise to accelerated expansion. Moreover, we consider the evolution in a universe filled with a pressureless fluid in addition to the vector field and study the existence of attractors in which we can have a transition from matter domination to vector domination with accelerated expansion so that the vector field may play the role of dark energy. We find that the existence of solutions with late-time accelerated expansion is a generic prediction of vector tensor theories and that such solutions typically lead to the presence of future singularities. Finally, limits from local gravity tests are used to get constraints on the value of the vector field at small (Solar System) scales.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-09-01
2009
2009-09-01
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/20.500.14352/44340
url https://hdl.handle.net/20.500.14352/44340
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 Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
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_ 1869422145074888704
score 15,301603

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