Einstein static universes are unstable in generic f(R) models

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dc.creatorSeahra, Sanjeev S.
dc.creatorBoehmer, Christian G.
dc.date2009-01-07
dc.date2009-03-14
dc.date.accessioned2026-07-07T12:52:04Z
dc.date.available2026-07-07T12:52:04Z
dc.descriptionWe study Einstein static universes in the context of generic f(R) models. It is shown that Einstein static solutions exist for a wide variety of modified gravity models sourced by a barotropic perfect fluid with equation of state w=p/rho, but these solutions are always unstable to either homogeneous or inhomogeneous perturbations. Our general results are in agreement with specific models investigated in that past. We also discuss how our techniques can be applied to other scenarios in f(R) gravity.
dc.description7 pages, 2 figures. Minor corrections. Minor changes and references added to match version accepted by Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0901.0892
dc.identifierhttp://arxiv.org/abs/0901.0892
dc.identifierPhys.Rev.D79:064009,2009
dc.identifierdoi:10.1103/PhysRevD.79.064009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223184
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectCosmology and Nongalactic Astrophysics
dc.titleEinstein static universes are unstable in generic f(R) models
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