Cosmological solutions with nonlinear bulk viscosity

被引：84

作者：

Chimento, LP ^{[1
]}

Jakubi, AS

Mendez, V

Maartens, R

机构：

[1] Univ Buenos Aires, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

[2] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain

[3] Univ Portsmouth, Sch Comp Sci & Math, Portsmouth PO1 2EG, Hants, England

来源：

CLASSICAL AND QUANTUM GRAVITY | 1997年 / 14卷 / 12期

关键词：

D O I：

10.1088/0264-9381/14/12/019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A recently proposed nonlinear transport equation is used to model bulk viscous cosmologies that may be far from equilibrium, as happens during viscous fluid inflation or during reheating. The asymptotic stability of the de Sitter and Friedmann solutions is investigated. The former is stable for bulk viscosity index q < 1 and the latter for q > 1. New solutions are obtained in the weakly nonlinear regime for q = 1. These solutions are singular and some of them represent a late-time inflationary era.

引用

页码：3363 / 3375

页数：13