Observational constraints on a phenomenological f (R, partial derivative R)-model

dc.contributorUniversidade Federal de Alfenas (UNIFAL)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal do Rio Grande do Norte (UFRN)
dc.contributorInstituto de Fomento e Coordenação Industrial
dc.contributorInstituto Tecnológico de Aeronaútica, Praça Mal
dc.creatorCuzinatto, R. R.
dc.creatorMelo, C. A. M. de [UNESP]
dc.creatorMedeiros, L. G.
dc.creatorPompeia, P. J.
dc.date2015-10-21T20:00:33Z
dc.date2015-10-21T20:00:33Z
dc.date2015-03-01
dc.date.accessioned2023-09-12T06:46:16Z
dc.date.available2023-09-12T06:46:16Z
dc.identifierhttp://link.springer.com/article/10.1007%2Fs10714-015-1862-z
dc.identifierGeneral Relativity And Gravitation. New York: Springer/plenum Publishers, v. 47, n. 29, p. 1-22, 2015.
dc.identifier0001-7701
dc.identifierhttp://hdl.handle.net/11449/128977
dc.identifier10.1007/s10714-015-1862-z
dc.identifierWOS:000350690000013
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8778319
dc.descriptionThis paper analyses the cosmological consequences of amodified theory of gravity whose action integral is built from a linear combination of the Ricci scalar R and a quadratic term in the covariant derivative of R. The resulting Friedmann equations are of the fifth-order in the Hubble function. These equations are solved numerically for a flat space section geometry and pressureless matter. The cosmological parameters of the higher-order model are fit using SN Ia data and X-ray gas mass fraction in galaxy clusters. The best-fit present-day t(0) values for the deceleration parameter, jerk and snap are given. The coupling constant beta of the model is not univocally determined by the data fit, but partially constrained by it. Density parameter Omega(m0) is also determined and shows weak correlation with the other parameters. The model allows for two possible future scenarios: there may be either an eternal expansion or a Rebouncing event depending on the set of values in the space of parameters. The analysis towards the past performed with the best-fit parameters shows that the model is not able to accommodate a matter-dominated stage required to the formation of structure.
dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.descriptionFAPERN-Brazil
dc.descriptionInstituto de Ciência e Tecnologia, Universidade Federal de Alfenas, Rod. José Aurélio Vilela (BR 267), km 533, no 11999, Poços de Caldas, MG, CEP 37701-970, Brazil
dc.descriptionEscola de Ciência e Tecnologia, Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, Campus Universitário, s/n - Lagoa Nova, Natal, RN, CEP 59078-970, Brazil
dc.descriptionInstituto de Fomento e Coordenação Industrial, Praça Mal. Eduardo Gomes 50, São José dos Campos, SP, CEP 12228-901, Brazil
dc.descriptionInstituto Tecnológico de Aeronaútica, Praça Mal. Eduardo Gomes 50, São José dos Campos, SP, CEP 12228-900, Brazil
dc.descriptionInstituto de Física Teórica, Universidade Estadual Paulista, Rua Bento Teobaldo Ferraz 271 Bloco II, P.O. Box 70532-2, São Paulo, SP, CEP 01156-970, Brazil
dc.descriptionFAPEMIG: CEX-APQ-04440-10
dc.format1-22
dc.languageeng
dc.publisherSpringer
dc.relationGeneral Relativity And Gravitation
dc.relation1.721
dc.relation0,598
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectModified gravity
dc.subjectDark energy
dc.subjectHigher order gravity
dc.subjectCosmology
dc.titleObservational constraints on a phenomenological f (R, partial derivative R)-model
dc.typeArtigo


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