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 < < 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.

Curvature singularities, tidal forces and the viability of Palatini f(R) gravity / Barausse, E; Sotiriou, T. P.; Miller, John. - In: CLASSICAL AND QUANTUM GRAVITY. - ISSN 0264-9381. - 25:10(2008), pp. 105008-1-105008-15. [10.1088/0264-9381/25/10/105008]

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

BARAUSSE E;Miller, John
2008-01-01

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 < < 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.
2008
25
10
105008-1
105008-15
105008
https://arxiv.org/pdf/0712.1141.pdf
Barausse, E; Sotiriou, T. P.; Miller, John
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/30355
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