Multi-scalar-tensor equivalents for modified gravitational actions

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dc.contributor.authorBaykal, Ahmet
dc.contributor.authorDelice, Ozgur
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2013
dc.departmentNiğde ÖHÜ
dc.description.abstractA general scheme of constructing scalar-tensor equivalents to modified gravitational actions are studied using the algebra of exterior differential forms and the first order formalism that allows an independent connection and coframe. By introducing appropriate constraints on the connection, pseudo-Riemannian cases as well as non-Riemannian cases are discussed for various gravitational models. The issue of the dynamical degree of freedom for the resulting scalar fields is discussed at the level of the field equations. Explicit scalar-tensor equivalents for gravitational models based on f(R) models, the quadratic curvature Lagrangians and the models involving the gradients of the scalar curvature are presented. In particular, explicit scalar-tensor equivalence for gravitational Lagrangians popular in some cosmological models are constructed.
dc.identifier.doi10.1103/PhysRevD.88.084041
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.issue8
dc.identifier.scopus2-s2.0-84887075718
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://dx.doi.org/10.1103/PhysRevD.88.084041
dc.identifier.urihttps://hdl.handle.net/11480/4338
dc.identifier.volume88
dc.identifier.wosWOS:000326111500005
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherAMER PHYSICAL SOC
dc.relation.ispartofPHYSICAL REVIEW D
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleMulti-scalar-tensor equivalents for modified gravitational actions
dc.typeArticle

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