Exact exponential solutions in Einstein-Gauss-Bonnet flat anisotropic cosmology

被引：49

作者：

Chirkov, Dmitry ^{[1
,2
]}

Pavluchenko, Sergey ^{[3
]}

Toporensky, Alexey ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[3] Univ Austral Chile, Inst Ciencias Fis & Matemat, Valdivia, Chile

来源：

MODERN PHYSICS LETTERS A | 2014年 / 29卷 / 18期

关键词：

Modified gravity; cosmology; exact solution; DIMENSIONAL REDUCTION; LOVELOCK COSMOLOGY; PERFECT FLUID; GRAVITY; MODEL; SINGULARITY; TERM;

D O I：

10.1142/S021773231450093X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we are looking for the exponential solutions (i.e. the solutions with the scale factors change exponentially over time) in the Einstein-Gauss-Bonnet (EGB) gravity. We argue that we found all possible nonconstant-volume solutions (up to permutations) in lower dimensions ((4 + 1) and (5 + 1)) and developed a scheme which allows one to find necessary conditions in arbitrary dimension.

引用

页数：11

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