Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although non- relativist.ic stellar configurations can be constructed, we argue that relativistic stars cannot be present in such f(R) theories. This problem appears due to the dynamics of the effective scalar degree of freedom in the strong gravity regime. Our claim thus raises doubts on the viability of f(R) models.
|Publication status||Published - 2008 Dec 1|
|Event||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008 - Higashi-Hiroshima, Japan|
Duration: 2008 Nov 17 → 2008 Nov 21
|Conference||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008|
|Period||08/11/17 → 08/11/21|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics