σ model on de Sitter space

被引：2

作者：

Aichelburg, PC ^{[1
]}

Lechner, C ^{[1
]}

机构：

[1] Univ Vienna, Inst Theoret Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW D | 1998年 / 57卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.57.6176

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss spherically symmetric, static solutions to the SU(2) sigma model on de Sitter background. Despite its simplicity this model reflects many of the features exhibited by systems of nonlinear matter coupled to gravity; e.g., there exists a countable set of regular solutions with finite energy: All of the solutions show linear instability with the number of unstable modes increasing with energy.

引用

页码：6176 / 6180

页数：5

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