Perturbations in a stringlike fluid

被引：7

作者：

Fabris, JC ^{[1
]}

Goncalves, SVD ^{[1
]}

机构：

[1] UNIV FED FLUMINENSE,INST FIS,BR-24210340 NITEROI,RJ,BRAZIL

来源：

PHYSICAL REVIEW D | 1997年 / 56卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.56.6128

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study perturbatively a two-fluid model, where one of the fluids has an equation of state p = -rho/3 (stringlike fluid), considering fluctuations in both fluids. Such a model can represent a closed universe whose dynamics is that of an open universe. Ne find strong instabilities at small scale in the perturbation of the stringlike fluid, whereas the ordinary matter fluid has a stable behavior. We discuss the consequences for the anisotropy of the cosmic microwave background. [S0556-2821(97)06122-5].

引用

页码：6128 / 6132

页数：5

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