Accelerating Bianchi type-VI0 bulk viscous cosmological models in Lyra geometry

被引：8

作者：

Asgar, A. ^{[1
]}

Ansari, M. ^{[1
]}

机构：

[1] North Eastern Hill Univ, Dept Math, Shillong 793022, Meghalaya, India

来源：

JOURNAL OF THEORETICAL AND APPLIED PHYSICS | 2014年 / 8卷 / 04期

基金：

英国科研创新办公室;

关键词：

Bianchi type-VI0 universe; Accelerated expansion; Bulk viscosity; Lyra geometry;

D O I：

10.1007/s40094-014-0151-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The present study deals with spatially homogeneous and totally anisotropic Bianchi type-VI0 bulk viscous cosmological models in Lyra geometry. The Einstein's field equations have been solved exactly by taking the shear (sigma) in the model proportional to expansion scalar (theta) which leads to A = B-n, where A and B are metric functions and n is a positive constant (n > 1). We also adopt a condition zeta theta = L (constant) where zeta is the coefficient of bulk viscosity. It has been found that the displacement vector (beta) is a decreasing function of time and it approaches to a small positive value at late time which is supported by recent observations. It is also found that the distance modulus curve of derived model matches with observations perfectly.

引用

页码：219 / 224

页数：6

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