Phys. Rev. D 72, 124005 (2005) [10 pages]Stability of modified gravity modelsReceived 2 October 2005; published 8 December 2005 Conditions for the existence and stability of de Sitter space in modified gravity are derived by considering inhomogeneous perturbations in a gauge-invariant formalism. The stability condition coincides with the corresponding condition for stability with respect to homogeneous perturbations, while this is not the case in scalar-tensor gravity. The stability criterion is applied to various modified gravity models of the early and the present universe. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.72.124005
DOI:
10.1103/PhysRevD.72.124005
PACS:
04.50.+h, 98.80.−k
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.