Extension of the EGS theorem to metric and Palatini f(R) gravity

Details Extension of the EGS theorem to metric and Palatini f(R) gravity Extension of the EGS theorem to metric and Palatini f(R) gravity

2008-11-12

arxiv.org/abs/0811.1870v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, latex. Contribution to the anniversary volume "Problems of Modern Cosmology" in honour of Prof. S.D. Odintsov to be

Scientific paper

By using the equivalence between metric and Palatini f(R) (or "modified")
gravities with omega=0, -3/2 Brans-Dicke theories, it is shown that the
Ehlers-Geren-Sachs theorem of general relativity is extended to modified
gravity. In the case of metric f(R) gravity previously studied, this agrees
with previous literature.

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