Observational constraints on varying fundamental constants in a minimal CPC model
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1093/mnras/stac3267 http://hdl.handle.net/11449/248843 |
Resumo: | A minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimensional Riemannian manifold, where a covariantly conserved stress-energy tensor acts as source of the field equations, which are formally the same as Einstein field equations, but where the couplings {G, c, Λ} are allowed to vary simultaneously. The minimal CPC model takes Λ as a genuine constant while c and G vary in an entangled way that is consistent with Bianchi identity and the aforementioned assumptions. The model is constrained using the most recent galaxy cluster gas mass fraction observational data. Our result indicates that the functions c(z) and G(z) = G0 (c/c0)4 are compatible with constant couplings for the two different parametrizations of c = c(z) adopted here. |
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Observational constraints on varying fundamental constants in a minimal CPC modelcosmology: theorygalaxies: clustersgravitationA minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimensional Riemannian manifold, where a covariantly conserved stress-energy tensor acts as source of the field equations, which are formally the same as Einstein field equations, but where the couplings {G, c, Λ} are allowed to vary simultaneously. The minimal CPC model takes Λ as a genuine constant while c and G vary in an entangled way that is consistent with Bianchi identity and the aforementioned assumptions. The model is constrained using the most recent galaxy cluster gas mass fraction observational data. Our result indicates that the functions c(z) and G(z) = G0 (c/c0)4 are compatible with constant couplings for the two different parametrizations of c = c(z) adopted here.Department of Physics University of OttawaInstituto de Ciência e Tecnologia Universidade Federal de Alfenas, MGDepartamento de Física Teórica e Experimental Universidade Federal do Rio Grande do Norte, RNDepartamento de Física Faculdade de Engenharia e Ciências de Guaratinguetá Universidade Estadual Paulista (UNESP), SPDepartamento de Física Faculdade de Engenharia e Ciências de Guaratinguetá Universidade Estadual Paulista (UNESP), SPUniversity of OttawaUniversidade Federal de AlfenasUniversidade Federal do Rio Grande do NorteUniversidade Estadual Paulista (UNESP)Cuzinatto, R. R.Holanda, R. F.L.Pereira, S. H. [UNESP]2023-07-29T13:55:12Z2023-07-29T13:55:12Z2023-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article633-640http://dx.doi.org/10.1093/mnras/stac3267Monthly Notices of the Royal Astronomical Society, v. 519, n. 1, p. 633-640, 2023.1365-29660035-8711http://hdl.handle.net/11449/24884310.1093/mnras/stac32672-s2.0-85159601401Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMonthly Notices of the Royal Astronomical Societyinfo:eu-repo/semantics/openAccess2023-07-29T13:55:12Zoai:repositorio.unesp.br:11449/248843Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T13:55:12Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Observational constraints on varying fundamental constants in a minimal CPC model |
title |
Observational constraints on varying fundamental constants in a minimal CPC model |
spellingShingle |
Observational constraints on varying fundamental constants in a minimal CPC model Cuzinatto, R. R. cosmology: theory galaxies: clusters gravitation |
title_short |
Observational constraints on varying fundamental constants in a minimal CPC model |
title_full |
Observational constraints on varying fundamental constants in a minimal CPC model |
title_fullStr |
Observational constraints on varying fundamental constants in a minimal CPC model |
title_full_unstemmed |
Observational constraints on varying fundamental constants in a minimal CPC model |
title_sort |
Observational constraints on varying fundamental constants in a minimal CPC model |
author |
Cuzinatto, R. R. |
author_facet |
Cuzinatto, R. R. Holanda, R. F.L. Pereira, S. H. [UNESP] |
author_role |
author |
author2 |
Holanda, R. F.L. Pereira, S. H. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
University of Ottawa Universidade Federal de Alfenas Universidade Federal do Rio Grande do Norte Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Cuzinatto, R. R. Holanda, R. F.L. Pereira, S. H. [UNESP] |
dc.subject.por.fl_str_mv |
cosmology: theory galaxies: clusters gravitation |
topic |
cosmology: theory galaxies: clusters gravitation |
description |
A minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimensional Riemannian manifold, where a covariantly conserved stress-energy tensor acts as source of the field equations, which are formally the same as Einstein field equations, but where the couplings {G, c, Λ} are allowed to vary simultaneously. The minimal CPC model takes Λ as a genuine constant while c and G vary in an entangled way that is consistent with Bianchi identity and the aforementioned assumptions. The model is constrained using the most recent galaxy cluster gas mass fraction observational data. Our result indicates that the functions c(z) and G(z) = G0 (c/c0)4 are compatible with constant couplings for the two different parametrizations of c = c(z) adopted here. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:55:12Z 2023-07-29T13:55:12Z 2023-02-01 |
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/10.1093/mnras/stac3267 Monthly Notices of the Royal Astronomical Society, v. 519, n. 1, p. 633-640, 2023. 1365-2966 0035-8711 http://hdl.handle.net/11449/248843 10.1093/mnras/stac3267 2-s2.0-85159601401 |
url |
http://dx.doi.org/10.1093/mnras/stac3267 http://hdl.handle.net/11449/248843 |
identifier_str_mv |
Monthly Notices of the Royal Astronomical Society, v. 519, n. 1, p. 633-640, 2023. 1365-2966 0035-8711 10.1093/mnras/stac3267 2-s2.0-85159601401 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Monthly Notices of the Royal Astronomical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
633-640 |
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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1799964421832835072 |