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Modified gravity and the stability of de Sitter space

Valerio Faraoni
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Abstract

Within the context of modified gravity and dark energy scenarios of the accelerating 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.

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Valerio Faraoni. 2005-09-01. Modified gravity and the stability of de Sitter space. https://doi.org/10.1103/physrevd.72.061501

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