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.
Polytropic spheres in Palatini f(R) gravity / Barausse, E.; Sotiriou, T. P.; Miller, J. C.. - 30:(2008), pp. 189-192. (Intervento presentato al convegno Spanish relativity meeting = Encuentros relativistas españoles : ERE2007 : Relativistic astrophysics and cosmology : Puerto de la Cruz, Tenerife, Spain, September 10-14, 2007 tenutosi a Inst Astrofis Canarias, Tenerife, SPAIN nel SEP 10-14, 2007) [10.1051/eas:0830023].
Polytropic spheres in Palatini f(R) gravity
Barausse, E.;
2008-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
