Anisotropic cosmological solutions in R+ R<sup>2</sup>gravity

dc.date.accessioned	2019-01-22T20:45:50Z
dc.date.available	2019-01-22T20:45:50Z
dc.date.issued	2018
dc.identifier.issn	1434-6044
dc.identifier.uri	https://dspace.kpfu.ru/xmlui/handle/net/148650
dc.description.abstract	© 2018, The Author(s). In this paper we investigate the past evolution of an anisotropic Bianchi I universe in R+ R2gravity. Using the dynamical system approach we show that there exists a new two-parameter set of solutions that includes both an isotropic “false radiation” solution and an anisotropic generalized Kasner solution, which is stable. We derive the analytic behavior of the shear from a specific property of f(R) gravity and the analytic asymptotic form of the Ricci scalar when approaching the initial singularity. Finally, we numerically check our results.
dc.relation.ispartofseries	European Physical Journal C
dc.title	Anisotropic cosmological solutions in R+ R<sup>2</sup>gravity
dc.type	Article
dc.relation.ispartofseries-issue	4
dc.relation.ispartofseries-volume	78
dc.collection	Публикации сотрудников КФУ
dc.source.id	SCOPUS14346044-2018-78-4-SID85045740815

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