Palatini f(R) gravity as a fixed point
arXiv:0806.0766 · doi:10.1016/j.physletb.2008.06.002
Abstract
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.
9 pages, LaTeX, to appear in Phys. Lett. B