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.
|出版ステータス||Published - 2008 12 1|
|イベント||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008 - Higashi-Hiroshima, Japan|
継続期間: 2008 11 17 → 2008 11 21
|Conference||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008|
|Period||08/11/17 → 08/11/21|
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