Modified gravity and the stability of de Sitter space
- 16 September 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 72 (6) , 061501
- https://doi.org/10.1103/physrevd.72.061501
Abstract
Within the context of modified gravity and dark energy scenarios of the accelerated universe, we study the stability of de Sitter space with respect to inhomogeneous perturbations using a gauge-independent formalism. In modified gravity the stability condition is exactly the same that one obtains from a homogeneous perturbation analysis, while the stability condition in scalar-tensor gravity is more restrictive.Keywords
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