Polytropic spheres in Palatini f(R) gravity
General Relativity and Quantum Cosmology
2011-08-31 v1
Abstract
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.
Cite
@article{arxiv.0801.4852,
title = {Polytropic spheres in Palatini f(R) gravity},
author = {Enrico Barausse and Thomas P. Sotiriou and John C. Miller},
journal= {arXiv preprint arXiv:0801.4852},
year = {2011}
}
Comments
Talk given by EB at the 30th Spanish Relativity Meeting, 10 - 14 September 2007, Tenerife (Spain). Based on arXiv:gr-qc/0703132 and arXiv:0712.1141 [gr-qc]