Spherically symmetric solutions in higher-derivative theories of gravity

Medeiros, Léo Gouvêa; Silva, Gesiel Rodrigues da

Spherically symmetric solutions in higher-derivative theories of gravity

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dc.contributor.author	Medeiros, Léo Gouvêa
dc.contributor.author	Silva, Gesiel Rodrigues da
dc.date.accessioned	2020-08-26T14:48:53Z
dc.date.available	2020-08-26T14:48:53Z
dc.date.issued	2020-06-29
dc.description.resumo	Higher-order theories of gravity have received much attention from several areas including quantum gravity, string theory, and cosmology. This paper proposes a higher-order gravity whose action includes all curvature scalar terms up to the second-order corrections of general relativity, namely, R2, R3, and R□R. Then, we explore spherically symmetric and static solutions in the weak-field regime and black holes context. All solutions in the weak-field regime due to a point mass are deduced, and by making a stability analysis of these solutions, we restrict them to Yukawa-type solutions. In regard to black hole solutions, we use the Lichnerovicz method to investigate the possibility of the existence of non-Schwarzschild black holes. The results obtained show that non-Schwarzschild solutions might exist. However, for reasonable values of the parameters of the theory, its horizon radii are extremely small making macroscopic black holes different from Schwarzschild unfeasible	pt_BR
dc.identifier.citation	SILVA, G.R.; MEDEIROS, L. G.. Spherically symmetric solutions in higher-derivative theories of gravity. Physical Review D, [s.l.], v. 101, n. 12, p. 124061, 29 jun. 2020. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.101.124061. Acesso em: 12 ago. 2020. http://dx.doi.org/10.1103/physrevd.101.124061.	pt_BR
dc.identifier.doi	10.1103/PhysRevD.101.124061
dc.identifier.issn	2470-0010
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29893
dc.language	en	pt_BR
dc.publisher	American Physical Society	pt_BR
dc.subject	Spherically	pt_BR
dc.subject	Symmetric solutions	pt_BR
dc.subject	Higher-derivative	pt_BR
dc.subject	Theories of gravity	pt_BR
dc.title	Spherically symmetric solutions in higher-derivative theories of gravity	pt_BR
dc.title.alternative	ingles	pt_BR
dc.type	article	pt_BR