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
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2016 |
| Outros Autores: | , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UNESP |
| Texto Completo: | http://dx.doi.org/10.1007/s10509-016-2788-y http://hdl.handle.net/11449/231377 |
Resumo: | 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. |
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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)Moraes, P. H.R.S.Ribeiro, G.Correa, R. A.C.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/openAccess2022-04-29T08:45:00Zoai:repositorio.unesp.br:11449/231377Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:45Repositório 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 |
| 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.contributor.author.fl_str_mv |
Moraes, P. H.R.S. Ribeiro, G. Correa, R. A.C. |
| 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 |
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Repositório Institucional da UNESP |
| collection |
Repositório Institucional da UNESP |
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Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
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|
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1799965629061529600 |