Curvature singularities, tidal forces and the viability of Palatini f(R) gravity

被引：72

作者：

Barausse, E. ^{[1
,2
]}

Sotiriou, T. P. ^{[1
,2
,3
]}

Miller, J. C. ^{[1
,2
,4
]}

机构：

[1] SISSA, Int Sch Adv Studies, I-34014 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[3] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[4] Univ Oxford, Dept Phys Astrophys, Oxford OX1 3RH, England

来源：

CLASSICAL AND QUANTUM GRAVITY | 2008年 / 25卷 / 10期

关键词：

D O I：

10.1088/0264-9381/25/10/105008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a previous paper we showed that static spherically symmetric objects which, in the vicinity of their surface, are well described by a polytropic equation of state with 3/ 2 < Gamma < 2 exhibit a curvature singularity in Palatini f(R) gravity. We argued that this casts serious doubt on the validity of Palatini f ( R) gravity as a viable alternative to general relativity. In the present paper, we further investigate this characteristic of Palatini f ( R) gravity in order to clarify its physical interpretation and consequences.

引用

页数：15

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