Induced equation of state for the universe epochs constrained by the hubble parameter

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dc.contributor.authorLapola, M. M.
dc.contributor.authorMoraes, P. H.R.S.
dc.contributor.authorde Paula, W.
dc.contributor.authorJesus, J. F. [UNESP]
dc.contributor.authorValentim, R.
dc.contributor.authorMalheiro, M.
dc.contributor.institutionITA - Instituto Tecnológico de Aeronáutica - Departamento de Física
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2021-06-25T11:00:24Z
dc.date.available2021-06-25T11:00:24Z
dc.date.issued2021-08-01
dc.description.abstractWe present a five dimensional cosmological metric that reveals a four-dimensional energy-momentum tensor. We analyse three cases for the resulting field equations: null, positive and negative cosmological constant Λ. For the case with null cosmological constant, we obtain a solution able to describe the radiation-dominated era of the universe. The positive five-dimensional cosmological constant case yields a bounce cosmological model. In the negative Λ case, the scale factor for the line element is obtained as a(t)=c5sinh([Formula presented]|Λ|t), where c5 is a constant. This solution can remarkably describe not only the late-time cosmic acceleration but also the non-accelerated stages of the cosmic expansion, namely the radiation and matter dominated epochs in a continuous form. We obtain an analytical equation of state capable of describing the different epochs of the universe and it reads as p=ω(z)ρ with ω(z)=[Formula presented][1−[Formula presented]], with p being the pressure of the universe, ρ its density and z is the redshift. In our model the constant c5 is related to the Hubble constant as H0=[Formula presented]coth[arcsinh([Formula presented])2] and this satisfactorily fits the observational data for the low redshift sample of the experimental measurements of the Hubble parameter, which results in H0=72.2−5.5+5.3 km s−1 Mpc−1 and c5=0.600−0.058+0.061.en
dc.description.affiliationITA - Instituto Tecnológico de Aeronáutica - Departamento de Física
dc.description.affiliationUniversidade de São Paulo Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Rua do Matão 1226, Cidade Universitária
dc.description.affiliationUniversidade Estadual Paulista (Unesp), Campus Experimental de Itapeva - R. Geraldo Alckmin 519
dc.description.affiliationDepartamento de Física Instituto de Ciências Ambientais Químicas e Farmacêuticas (ICAQF), Universidade Federal de São Paulo - UNIFESP, Rua São Nicolau no.210, Centro
dc.description.affiliationUnespUniversidade Estadual Paulista (Unesp), Campus Experimental de Itapeva - R. Geraldo Alckmin 519
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/26258-2
dc.description.sponsorshipIdFAPESP: 2015/08476-0
dc.description.sponsorshipIdFAPESP: 2017/05859-0
dc.description.sponsorshipIdFAPESP: 2018/20689-7
dc.description.sponsorshipIdCNPq: 313236/2018-6
dc.description.sponsorshipIdCNPq: 438562/2018-6
dc.description.sponsorshipIdCAPES: 88881.309870/2018-01
dc.description.sponsorshipIdCAPES: 88882.446980/2019-01
dc.format.extent159-175
dc.identifierhttp://dx.doi.org/10.1016/j.cjph.2021.04.021
dc.identifier.citationChinese Journal of Physics, v. 72, p. 159-175.
dc.identifier.doi10.1016/j.cjph.2021.04.021
dc.identifier.issn0577-9073
dc.identifier.scopus2-s2.0-85106229522
dc.identifier.urihttp://hdl.handle.net/11449/207753
dc.language.isoeng
dc.relation.ispartofChinese Journal of Physics
dc.sourceScopus
dc.subjectCosmology
dc.subjectDark energy
dc.subjectExtra dimensions
dc.titleInduced equation of state for the universe epochs constrained by the hubble parameteren
dc.typeArtigo

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