Dark energy and viscous cosmology

被引：236

作者：

Brevik, I ^{[1
]}

Gorbunova, O ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway

来源：

GENERAL RELATIVITY AND GRAVITATION | 2005年 / 37卷 / 12期

关键词：

dark energy; viscous cosmology; Big Rip;

D O I：

10.1007/s10714-005-0178-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Singularities in the dark energy universe are discussed, assuming that there is a bulk viscosity in the cosmic fluid. In particular, it is shown how the physically natural assumption of letting the bulk viscosity be proportional to the scalar expansion in a spatially flat FRW universe can drive the fluid into the phantom region (w < -1), even if it lies in the quintessence region (w > -1) in the non-viscous case.

引用

页码：2039 / 2045

页数：7

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