Stability of the Einstein static universe in f(R) gravity
Journal Article
·
· Physical Review. D, Particles Fields
- Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 2EG (United Kingdom)
We analyze the stability of the Einstein static universe by considering homogeneous scalar perturbations in the context of f(R) modified theories of gravity. By considering specific forms of f(R), the stability regions of the solutions are parametrized by a linear equation of state parameter w=p/{rho}. Contrary to classical general relativity, it is found that in f(R) gravity a stable Einstein cosmos with a positive cosmological constant does indeed exist. Thus, we are lead to conclude that, in principle, modifications in f(R) gravity stabilize solutions which are unstable in general relativity.
- OSTI ID:
- 21032452
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stability of the Einstein static universe in modified Gauss-Bonnet gravity
Existence of Einstein static universes and their stability in fourth-order theories of gravity
Stability of the Einstein static universe in open cosmological models
Journal Article
·
Sun Mar 15 00:00:00 EDT 2009
· Physical Review. D, Particles Fields
·
OSTI ID:21266409
Existence of Einstein static universes and their stability in fourth-order theories of gravity
Journal Article
·
Fri Aug 15 00:00:00 EDT 2008
· Physical Review. D, Particles Fields
·
OSTI ID:21250495
Stability of the Einstein static universe in open cosmological models
Journal Article
·
Wed Sep 15 00:00:00 EDT 2010
· Physical Review. D, Particles Fields
·
OSTI ID:21421147