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de Sitter attractors in generalized gravity

Valerio Faraoni
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Abstract

We obtain conditions for the existence and stability of de Sitter attractors in the phase space of spatially homogeneous and isotropic cosmology in generalized theories of gravity (including non-linear and scalar-tensor theories). These conditions are valid for any form of the coupling functions of the theory. Stability with respect to inhomogeneous perturbations is analyzed using a covariant and gauge-invariant formalism. The relevance for inflationary scenarios of the early universe and for quintessence models of the present era is discussed.

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Valerio Faraoni. 2004-07-06. de Sitter attractors in generalized gravity. https://doi.org/10.1103/physrevd.70.044037

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