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On the stability of a class of modified gravitational models

Jan, 2007
8 pages
Published in:
  • Int.J.Theor.Phys. 47 (2008) 898-910
e-Print:
DOI:
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reference search137 citations

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200620112016202120240510152025
Abstract: (arXiv)
Motivated by the dark energy issue, a minisuperspace approach to the stability for modified gravitational models in a four dimensional cosmological setting are investigated. Specifically, after revisiting the f(R)f(R) case, RR being the Ricci curvature, we present a stability condition around a de Sitter solution valid for modified gravitational models of generalized Gauss-Bonnet type F(R,G,Q)F(R,G,Q), GG and QQ being the Gauss-Bonnet and quadratic Riemann invariants respectively. A generalization to higher order invariants is mentioned.
  • gravitation: model
  • stability
  • space-time: de Sitter
  • minisuperspace
  • space-time: Robertson-Walker
  • Gauss-Bonnet term
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