Dark matter from torsion in Friedmann cosmology
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1140/epjc/s10052-022-10317-w http://hdl.handle.net/11449/240877 |
Resumo: | A cosmological model in an Einstein–Cartan framework endowed with torsion is studied. For a torsion function assumed to be proportional to Hubble expansion function, namely ϕ= - αH, the contribution of torsion function as a dark matter component is studied in two different approaches. In the first one, the total matter energy density is altered by torsion coupling α, giving rise to an effective dark matter and cosmological constant terms that reproduce quite well the flat cosmic concordance model. In the second approach, starting with just standard baryonic matter plus a cosmological constant term, it is obtained that the coupling of torsion with baryons and cosmological constant term naturally gives rise to a dark matter contribution, together a modified cosmological term. In this model the dark matter sector can be interpreted as an effective coupling of the torsion function with the ordinary baryonic matter and cosmological constant. Finally, it is shown that both models are totally compatible with recent cosmological data from Supernovae and Hubble parameter measurements. |
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Repositório Institucional da UNESP |
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Dark matter from torsion in Friedmann cosmologyA cosmological model in an Einstein–Cartan framework endowed with torsion is studied. For a torsion function assumed to be proportional to Hubble expansion function, namely ϕ= - αH, the contribution of torsion function as a dark matter component is studied in two different approaches. In the first one, the total matter energy density is altered by torsion coupling α, giving rise to an effective dark matter and cosmological constant terms that reproduce quite well the flat cosmic concordance model. In the second approach, starting with just standard baryonic matter plus a cosmological constant term, it is obtained that the coupling of torsion with baryons and cosmological constant term naturally gives rise to a dark matter contribution, together a modified cosmological term. In this model the dark matter sector can be interpreted as an effective coupling of the torsion function with the ordinary baryonic matter and cosmological constant. Finally, it is shown that both models are totally compatible with recent cosmological data from Supernovae and Hubble parameter measurements.Departamento de Física Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista (UNESP), Av. Dr. Ariberto Pereira da Cunha 333, SPInstituto de Ciências e Engenharia Universidade Estadual Paulista (UNESP), R. Geraldo Alckmin, 519, SPDepartamento de Física Teórica e Experimental Universidade Federal do Rio Grande do Norte, RNDepartamento de Física Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista (UNESP), Av. Dr. Ariberto Pereira da Cunha 333, SPInstituto de Ciências e Engenharia Universidade Estadual Paulista (UNESP), R. Geraldo Alckmin, 519, SPUniversidade Estadual Paulista (UNESP)Universidade Federal do Rio Grande do NortePereira, S. H. [UNESP]Vicente, A. M. [UNESP]Jesus, J. F. [UNESP]Holanda, R. F. L.2023-03-01T20:36:42Z2023-03-01T20:36:42Z2022-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1140/epjc/s10052-022-10317-wEuropean Physical Journal C, v. 82, n. 4, 2022.1434-60521434-6044http://hdl.handle.net/11449/24087710.1140/epjc/s10052-022-10317-w2-s2.0-85128735657Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEuropean Physical Journal Cinfo:eu-repo/semantics/openAccess2023-03-01T20:36:42Zoai:repositorio.unesp.br:11449/240877Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-03-01T20:36:42Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Dark matter from torsion in Friedmann cosmology |
title |
Dark matter from torsion in Friedmann cosmology |
spellingShingle |
Dark matter from torsion in Friedmann cosmology Pereira, S. H. [UNESP] |
title_short |
Dark matter from torsion in Friedmann cosmology |
title_full |
Dark matter from torsion in Friedmann cosmology |
title_fullStr |
Dark matter from torsion in Friedmann cosmology |
title_full_unstemmed |
Dark matter from torsion in Friedmann cosmology |
title_sort |
Dark matter from torsion in Friedmann cosmology |
author |
Pereira, S. H. [UNESP] |
author_facet |
Pereira, S. H. [UNESP] Vicente, A. M. [UNESP] Jesus, J. F. [UNESP] Holanda, R. F. L. |
author_role |
author |
author2 |
Vicente, A. M. [UNESP] Jesus, J. F. [UNESP] Holanda, R. F. L. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal do Rio Grande do Norte |
dc.contributor.author.fl_str_mv |
Pereira, S. H. [UNESP] Vicente, A. M. [UNESP] Jesus, J. F. [UNESP] Holanda, R. F. L. |
description |
A cosmological model in an Einstein–Cartan framework endowed with torsion is studied. For a torsion function assumed to be proportional to Hubble expansion function, namely ϕ= - αH, the contribution of torsion function as a dark matter component is studied in two different approaches. In the first one, the total matter energy density is altered by torsion coupling α, giving rise to an effective dark matter and cosmological constant terms that reproduce quite well the flat cosmic concordance model. In the second approach, starting with just standard baryonic matter plus a cosmological constant term, it is obtained that the coupling of torsion with baryons and cosmological constant term naturally gives rise to a dark matter contribution, together a modified cosmological term. In this model the dark matter sector can be interpreted as an effective coupling of the torsion function with the ordinary baryonic matter and cosmological constant. Finally, it is shown that both models are totally compatible with recent cosmological data from Supernovae and Hubble parameter measurements. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-01 2023-03-01T20:36:42Z 2023-03-01T20:36:42Z |
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/10.1140/epjc/s10052-022-10317-w European Physical Journal C, v. 82, n. 4, 2022. 1434-6052 1434-6044 http://hdl.handle.net/11449/240877 10.1140/epjc/s10052-022-10317-w 2-s2.0-85128735657 |
url |
http://dx.doi.org/10.1140/epjc/s10052-022-10317-w http://hdl.handle.net/11449/240877 |
identifier_str_mv |
European Physical Journal C, v. 82, n. 4, 2022. 1434-6052 1434-6044 10.1140/epjc/s10052-022-10317-w 2-s2.0-85128735657 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
European Physical Journal C |
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 |
|
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1797790341235998720 |