A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism

In this work we present cosmological solutions from the simplest non-trivial polynomial function of T in f(R, T) theory of gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, respectively. Although such an approach yields a highly non-linear differential equa...

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Detalles Bibliográficos
Autores: Moraes, P. H.R.S., Ribeiro, G., Correa, R. A.C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/231377
Acceso en línea:http://dx.doi.org/10.1007/s10509-016-2788-y
http://hdl.handle.net/11449/231377
Access Level:acceso abierto
Palabra clave:Cosmic acceleration
Cosmological models
f(R, T) gravity
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spelling A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalismCosmic accelerationCosmological modelsf(R, T) gravityIn this work we present cosmological solutions from the simplest non-trivial polynomial function of T in f(R, T) theory of gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, respectively. Although such an approach yields a highly non-linear differential equation for the scale factor, we show that it is possible to obtain analytical solutions for the cosmological parameters. For some values of the free parameters, the model is able to predict a transition from a decelerated to an accelerated expansion of the universe and the values of the deceleration parameter agree with observation.Departamento de Física ITA – Instituto Tecnológico de AeronáuticaDepartamento de Física e Química FEG – Faculdade de Engenharia de GuaratinguetáCCNH Universidade Federal do ABCITA – Instituto Tecnológico de AeronáuticaFEG – Faculdade de Engenharia de GuaratinguetáUniversidade Federal do ABC (UFABC)2022-04-29T08:45:00Z2022-04-29T08:45:00Z2016-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s10509-016-2788-yAstrophysics and Space Science, v. 361, n. 7, 2016.1572-946X0004-640Xhttp://hdl.handle.net/11449/23137710.1007/s10509-016-2788-y2-s2.0-84975853476Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAstrophysics and Space Scienceinfo:eu-repo/semantics/openAccessMoraes, P. H.R.S.Ribeiro, G.Correa, R. A.C.2024-07-01T20:52:47Zoai:repositorio.unesp.br:11449/231377Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-07-01T20:52:47Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
title A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
spellingShingle A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
Moraes, P. H.R.S.
Cosmic acceleration
Cosmological models
f(R, T) gravity
title_short A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
title_full A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
title_fullStr A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
title_full_unstemmed A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
title_sort A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
dc.creator.none.fl_str_mv Moraes, P. H.R.S.
Ribeiro, G.
Correa, R. A.C.
author Moraes, P. H.R.S.
author_facet Moraes, P. H.R.S.
Ribeiro, G.
Correa, R. A.C.
author_role author
author2 Ribeiro, G.
Correa, R. A.C.
author2_role author
author
dc.contributor.none.fl_str_mv ITA – Instituto Tecnológico de Aeronáutica
FEG – Faculdade de Engenharia de Guaratinguetá
Universidade Federal do ABC (UFABC)
dc.subject.por.fl_str_mv Cosmic acceleration
Cosmological models
f(R, T) gravity
topic Cosmic acceleration
Cosmological models
f(R, T) gravity
description In this work we present cosmological solutions from the simplest non-trivial polynomial function of T in f(R, T) theory of gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, respectively. Although such an approach yields a highly non-linear differential equation for the scale factor, we show that it is possible to obtain analytical solutions for the cosmological parameters. For some values of the free parameters, the model is able to predict a transition from a decelerated to an accelerated expansion of the universe and the values of the deceleration parameter agree with observation.
publishDate 2016
dc.date.none.fl_str_mv 2016-07-01
2022-04-29T08:45:00Z
2022-04-29T08:45:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10509-016-2788-y
Astrophysics and Space Science, v. 361, n. 7, 2016.
1572-946X
0004-640X
http://hdl.handle.net/11449/231377
10.1007/s10509-016-2788-y
2-s2.0-84975853476
url http://dx.doi.org/10.1007/s10509-016-2788-y
http://hdl.handle.net/11449/231377
identifier_str_mv Astrophysics and Space Science, v. 361, n. 7, 2016.
1572-946X
0004-640X
10.1007/s10509-016-2788-y
2-s2.0-84975853476
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Astrophysics and Space Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
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