Polytropic spheres in Palatini f(R) gravity

Details Polytropic spheres in Palatini f(R) gravity Polytropic spheres in Palatini f(R) gravity

2008-01-31

arxiv.org/abs/0801.4852v1

EAS Publ.Ser.30:189-192,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Talk given by EB at the 30th Spanish Relativity Meeting, 10 - 14 September 2007, Tenerife (Spain). Based on arXiv:gr-qc/070313

Scientific paper

10.1051/eas:0830023

We examine static spherically symmetric polytropic spheres in Palatini f(R)
gravity and show that no regular solutions to the field equations exist for
physically relevant cases such as a monatomic isentropic gas or a degenerate
electron gas, thus casting doubt on the validity of Palatini f(R) gravity as an
alternative to General Relativity.

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