Modified gravity and the stability of de Sitter space
classification
🌀 gr-qc
astro-phhep-th
keywords
gravitystabilitymodifiedconditionsitterspaceacceleratinganalysis
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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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