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arxiv: 0706.1223 · v2 · submitted 2007-06-08 · 🌀 gr-qc · astro-ph· hep-th

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The phase space view of f(R) gravity

Jose C. C. de Souza , Valerio Faraoni
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classification 🌀 gr-qc astro-phhep-th
keywords phasespacegravitycomparisondiscussedeffectiveequilibriumequivalent
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We study the geometry of the phase space of spatially flat Friedmann-Lemaitre-Robertson-Walker models in f(R) gravity, for a general form of the function f(R). The equilibrium points (de Sitter spaces) and their stability are discussed, and a comparison is made with the phase space of the equivalent scalar-tensor theory. New effective Lagrangians and Hamiltonians are also presented.

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