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Dynamical symmetries in Brans-Dicke cosmology

dc.creatorPapagiannopoulos, G
dc.creatorBarrow, John David
dc.creatorBasilakos, S
dc.creatorGiacomini, A
dc.creatorPaliathanasis, A
dc.date.accessioned2016-12-20
dc.date.accessioned2018-11-24T23:19:39Z
dc.date.available2017-03-13T09:13:25Z
dc.date.available2018-11-24T23:19:39Z
dc.date.issued2017-01-20
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/263036
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3494
dc.description.abstractIn the context of generalized Brans-Dicke cosmology we use the Killing tensors of the minisuperspace in order to determine the unspecified potential of a scalar-tensor gravity theory. Specifically, based on the existence of contact symmetries of the field equations, we find four types of potentials which provide exactly integrable dynamical systems. We investigate the dynamical properties of these potentials by using a critical point analysis and we find solutions which lead to cosmic acceleration and under specific conditions we can have de-Sitter points as stable late-time attractors.
dc.languageen
dc.publisherAmerican Physical Society
dc.publisherPhysical Review D
dc.subjectcosmology
dc.subjectBrans-Dicke
dc.subjectintegrability
dc.subjectcritical points
dc.titleDynamical symmetries in Brans-Dicke cosmology
dc.typeArticle


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