Background cosmological dynamics in f(R) gravity and observational constraints

被引：34

作者：

Ali, Amna ^{[1
]}

Gannouji, Radouane ^{[2
]}

Sami, M. ^{[1
]}

Sen, Anjan A. ^{[1
]}

机构：

[1] Jamia Millia Islamia, Ctr Theoret Phys, New Delhi 110025, India

[2] IUCAA, Pune 411007, Maharashtra, India

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 10期

关键词：

DARK ENERGY; CONSTANT; QUINTESSENCE; SUPERNOVAE; LAMBDA;

D O I：

10.1103/PhysRevD.81.104029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we carry out a study of viable cosmological models in f(R) gravity at the background level. We use observable parameters like Omega and gamma to form an autonomous system of equations and show that the models under consideration exhibit two different regimes in their time evolution, namely, a phantom phase followed by a quintessencelike behavior. We employ state finder parameters to emphasize a characteristic discriminative signature of these models.

引用

页数：6

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