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arXiv · 0712.1141

Curvature singularities, tidal forces and the viability of Palatini f(R) gravity

E. Barausse·T. P. Sotiriou·J. C. Miller
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Abstract

In a previous paper we showed that static spherically symmetric objects which, in the vicinity of their surface, are well-described by a polytropic equation of state with 3/2<Gamma<2 exhibit a curvature singularity in Palatini f(R) gravity. We argued that this casts serious doubt on the validity of Palatini f(R) gravity as a viable alternative to General Relativity. In the present paper we further investigate this characteristic of Palatini f(R) gravity in order to clarify its physical interpretation and consequences.

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E. Barausse, T. P. Sotiriou, J. C. Miller. 2008-04-15. Curvature singularities, tidal forces and the viability of Palatini f(R) gravity. https://doi.org/10.1088/0264-9381%2F25%2F10%2F105008

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