EAS Publications Series
Volume 30, 2008Spanish Relativity Meeting - Encuentros Relativistas Españoles , ERE2007: Relativistic Astrophysics and Cosmology
|Page(s)||189 - 192|
|Published online||30 September 2008|
A. Oscoz, E. Mediavilla and M. Serra-Ricart (eds)
EAS Publications Series, 30 (2008) 189-192
Polytropic spheres in Palatini f(R) gravity
SISSA, International School for Advanced Studies,
via Beirut 2-4, 34014 Trieste, Italy and INFN, Sezione di Trieste
2 Department of Physics, University of Maryland, College Park, MD 20742-4111, USA
3 Department of Physics (Astrophysics), University of Oxford, Oxford, UK
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.
© EAS, EDP Sciences, 2008
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