Cylindrically symmetric fluid in unimodular f (R) gravity

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dc.contributor.authorAydin, Hueseyin
dc.contributor.authorDogru, Melis Ulu
dc.date.accessioned2025-01-27T20:50:07Z
dc.date.available2025-01-27T20:50:07Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this paper, we examine static cylindrical symmetric fluid in unimodular f (R) gravity. Unimodularity for cylindrical symmetric spacetime geometry is ensured with a coordinate transformation by using tetrad formalism. Field equation solutions for given matter and the spacetime are obtained. Resource of cosmic matter is discussed by using Equation of State (EoS) and energy conditions. We investigate weak and strong energy conditions in unimodular f (R) gravity context with the help of Raychaudhuri equations. Obtained results show that fluids which violate the energy conditions cause the proposed unimodular and cylindrical symmetric wormholes, but this kind of wormholes do not satisfy traversability conditions. Furthermore, the obtained solutions indicate that. coefficient in EoS must have the condition. = -1 for physically meaningful fluids. It is discussed whether the result is compatible with the unimodular gravitation theories.
dc.description.sponsorshipScientific Research Projects Commission of Canakkale Onsekiz Mart University (BAP) [FDK-2018-2730]
dc.description.sponsorshipThis study was funded by Scientific Research Projects Commission of Canakkale Onsekiz Mart University (BAP) (grant number FDK-2018-2730).
dc.identifier.doi10.1007/s10509-019-3697-7
dc.identifier.issn0004-640X
dc.identifier.issn1572-946X
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85075447381
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s10509-019-3697-7
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25415
dc.identifier.volume364
dc.identifier.wosWOS:000498486100001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofAstrophysics and Space Science
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectUnimodular f (R) gravity
dc.subjectEnergy conditions
dc.subjectPerfect fluid
dc.subjectCosmological constant
dc.subjectDark energy
dc.subjectCylindrical symmetric spacetime
dc.subjectWormhole
dc.titleCylindrically symmetric fluid in unimodular f (R) gravity
dc.typeArticle

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