Viscous dark energy in Bianchi type V spacetime

被引：32

作者：

Amirhashchi, Hassan ^{[1
]}

机构：

[1] Islamic Azad Univ, Mahshahr Branch, Dept Phys, Mahshahr 6351977439, Iran

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 12期

关键词：

ACCELERATING UNIVERSE; EXPANSION; H(Z);

D O I：

10.1103/PhysRevD.96.123507

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the behavior of dark energy (DE) in the scope of anisotropic Bianchi type V (BV) spacetime. First, we derive Friedmann-like equations, then we compare the dark energy equation of state (EoS) parameter for viscous and nonviscous dark energy and make a correspondence between DE and quintessence and phantom descriptions of nonviscous and viscous dark energy and reconstruct the potential of these two scalar fields. The late time behavior of the EoS parameter through a thermodynamical study has also been investigated. Finally, we investigate the conditions under which BV spacetime can be mapped into the Friedmann-Robertson-Walker and how the bulk viscose coefficient may affect the dark energy EoS parameter of our omega BV model with constraints from 28 Hubble parameter, H(z), measurements at intermediate redshifts 0.07 <= z <= 2.3.

引用

页数：10

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