Bianchi Type-V Bulk Viscous Barotropic Fluid Cosmological Model with Variable G and A

作     者：Raj Bali Seema Tinker 

作者机构：Department of Mathematics University of Rajasthan 3aipur-302004 India 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2008年第25卷第8期

页      面：3090-3093页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：the power-law exponents precipitation durative abrupt precipitation change 

摘      要：We investigate the Bianchi type-V bulk viscous barotropic fluid cosmological model with variable gravitational constant G and the cosmological constant A, assuming the condition on metric A/A=B/B=C/C=m/tn potential aswhere A, B, and C are functions of time t, while m and n are constants. To obtain the deterministic mo del, we also assume the relations P = p - 3η H, p = 7P, η = ηop^s, where p is the isotropic pressure, η the bulk viscosity,0≤r≤1 H the Hubble constant, ηo and s are constants. Various physical aspects of the model are *** case of n = 1 is also discussed to compare the results with the actual universe.