Cosmological viable f (R, T) dark energy model: dynamics and stability

被引：107

作者：

Baffou, E. H. ^{[1
]}

Kpadonou, A. V. ^{[1
,2
]}

Rodrigues, M. E. ^{[3
]}

Houndjo, M. J. S. ^{[1
,2
]}

Tossa, J. ^{[1
]}

机构：

[1] IMSP, Porto Novo, Benin

[2] Univ Parakou, Ecole Normale Super Natitingou, Parakou, Benin

[3] Fed Univ Para, Fac Ciencias Exactas & Tecnol, BR-68440000 Abaetetuba, Para, Brazil

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2015年 / 356卷 / 01期

关键词：

f; (R; T); gravity; Dynamics; Stability; EXTENDED THEORIES; MODIFIED GRAVITY;

D O I：

10.1007/s10509-014-2197-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we undertake the modified theory of gravity f(R,T), where R and T are the Ricci scalar and the trace of the energy momentum tensor, respectively. Imposing the conservation of the energy momentum tensor, we obtain a model about what dynamics and stability are studied. The stability is developed using the de Sitter and power-law solutions. The results show that the model presents stability for both the de Sitter and power-law solutions. Regarding the dynamics, cosmological solutions are obtained by integrating the background equations for both the low-redshift and high-redshift regimes and are consistent with the observational data.

引用

页码：173 / 180

页数：8

共 30 条

[1] Dynamics of scalar perturbations in f(R, T) gravity [J].