Explosive phenomena in modified gravity

被引：59

作者：

Arbuzova, E. V. ^{[2
]}

Dolgov, A. D. ^{[1
,3
,4
]}

机构：

[1] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

[2] Univ Dubna, Dept Higher Math, Dubna 141980, Russia

[3] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[4] Inst Theoret & Expt Phys, Moscow 113259, Russia

来源：

PHYSICS LETTERS B | 2011年 / 700卷 / 05期

关键词：

Modified gravity; Cosmology;

D O I：

10.1016/j.physletb.2011.05.030

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observational manifestations of some models of modified gravity, which have been suggested to explain the accelerated cosmological expansion, are analyzed for gravitating systems with time dependent mass density. It is shown that if the mass density rises with time, the system evolves to the singular state with infinite curvature scalar. The corresponding characteristic time is typically much shorter than the cosmological time. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：289 / 293

页数：5

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