'Understanding' cosmological bulk viscosity

被引：77
作者：
Zimdahl, W [1 ]
机构：
[1] UNIV KONSTANZ,FAK PHYS,D-78434 CONSTANCE,GERMANY
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1996年 / 280卷 / 04期
关键词：
hydrodynamics; radiative transfer; relativity; cosmology; theory;
D O I：
10.1093/mnras/280.4.1239
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A universe consisting of two interacting perfect fluids with the same LF-velocity is considered. A heuristic mean free time argument is used to show that the system as a whole cannot also be perfect, but necessarily implies a non-vanishing bulk viscosity. A new formula for the bulk viscosity is derived and compared with corresponding results of radiative hydrodynamics.
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收藏
页码：1239 / 1243
页数：5
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