Causal viscous cosmological models with variable G and Λ

被引：31

作者：

Singh, T

Beesham, A

机构：

[1] Univ Zululand, Dept Appl Math, ZA-3886 Kwa Dlangezwa, South Africa

[2] Shri Ramdeobaba Kamla Nehru Engn Coll, Dept Math, Nagpur 440013, Maharashtra, India

来源：

GENERAL RELATIVITY AND GRAVITATION | 2000年 / 32卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

cosmology; causal viscous fluid; variable G and Lambda;

D O I：

10.1023/A:1001958900592

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Einstein's equations with variable gravitational and cosmological "constants" are considered in the presence of a bulk viscous fluid source described by the truncated causal theory of Israel-Stewart, for the spatially flat homogeneous and isotropic universe. A solution is found in which the cosmological term varies inversely with the square of time. However, the gravitational constant G is found to be increasing with time.

引用

页码：607 / 614

页数：8

共 28 条

[1] A CRITICAL DENSITY COSMOLOGICAL MODEL WITH VARYING GRAVITATIONAL AND COSMOLOGICAL CONSTANTS [J].