Conformally symmetric Friedmann-Robertson-Walker metric in f (R, T) gravity

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dc.contributor.authorTaser, Dogukan
dc.date.accessioned2025-01-27T20:52:41Z
dc.date.available2025-01-27T20:52:41Z
dc.date.issued2020
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this paper, conformal symmetric Freidmann-Robertson-Walker (FRW) universe with perfect fluid in the framework of f(R, T) gravitational theory is investigated. Firstly, field equations of FRW universe with perfect fluid are obtained for f (R, T) = R + h(T) modified theory of gravity. The field equations of the model have been revised to understand physical nature between matter and geometry by means of conformal symmetry in f(R, T) gravitational theory. The exact solutions of conformal FRW universe with perfect fluid are attained for matter part of the f(R, T) model in the case of h(T) = lambda T. The f (R, T) gravitational theory is one of the acceptable modifications of General Relativity (GR) in order to expound cosmic acceleration of the universe with no needing any exotic component. Nevertheless, the obtained model indicates exotic matter distribution for the current selection of arbitrary constants. Also, different value selections of arbitrary constants for the obtained model are able to predicate expanding or contracting universe with zero deceleration. Besides, it is shown that the FRW universe under the influence of the conformal Killing vector preserves to isotropic nature. Energy conditions are investigated. Also, it is shown that the constructed model satisfies strong energy condition (SEC) in all cases.
dc.identifier.doi10.1142/S0217732320500674
dc.identifier.issn0217-7323
dc.identifier.issn1793-6632
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85077844904
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1142/S0217732320500674
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25826
dc.identifier.volume35
dc.identifier.wosWOS:000524067200006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWorld Scientific Publ Co Pte Ltd
dc.relation.ispartofModern Physics Letters A
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectf(R, T) gravity
dc.subjectperfect fluid
dc.subjectenergy conditions
dc.subjectconformal symmetry
dc.titleConformally symmetric Friedmann-Robertson-Walker metric in f (R, T) gravity
dc.typeArticle

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