Scenario of two-fluid dark energy models in Bianchi type-III Universe

被引：30

作者：

Tiwari, Rishi Kumar ^{[1
]}

Beesham, Aroonkumar ^{[2
]}

Shukla, Bhupendra Kumar ^{[1
]}

机构：

[1] Pandit Shambunath Shukla Univ, Dept Math, Shahdol 48400, Madhya Pradesh, India

[2] Univ Zululand, Dept Math Sci, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa

来源：

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2018年 / 15卷 / 11期

关键词：

Dark energy; Bianchi type-III model; two-fluids; equation of state parameter; COSMOLOGICAL MODEL; FRW UNIVERSE; COSMOGRAPHY; STATEFINDER; LAMBDA; OMEGA;

D O I：

10.1142/S021988781850189X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we have analyzed the equation of state parameter for dark energy in the spatially homogeneous and anisotropic Bianchi type-III spacetime filled with a barotropic fluid and dark energy by considering a variable deceleration parameter. To solve the Einstein field equations, we assume that the expansion scalar is proportional to the shear scalar. We find that during the evolution of the Universe, the equation of state and the cosmological parameters are positive decreasing functions of cosmic time t. Also, we discuss the physical parameters, as well as the jerk and cosmic span parameters, which predict that the Universe in this model approaches the ACDM model at late times.

引用

页数：15

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