Relativistic stars in f(R) gravity, and absence thereof

被引：151
作者：
Kobayashi, Tsutomu [1 ]
Maeda, Kei-ichi [1 ,2 ]
机构：
[1] Waseda Univ, Dept Phys, Shinjuku Ku, Tokyo 1698555, Japan
[2] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan
来源：
PHYSICAL REVIEW D | 2008年 / 78卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.78.064019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although nonrelativistic 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.
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页数：9
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