Palatini f(R) gravity as a fixed point

Details Palatini f(R) gravity as a fixed point Palatini f(R) gravity as a fixed point

2008-06-04

arxiv.org/abs/0806.0766v1

Phys.Lett.B665:135-138,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, LaTeX, to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2008.06.002

In the context of modified gravity, we point out how the Palatini version of
these theories is singled out as a very special case corresponding to the
unique fixed point of a transformation involving a special conformal rescaling
of the metric. This mathematical peculiarity signals deeply rooted problems
which make the theory unphysical.

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