Bogomol'nyi bound with a cosmological constant

被引：3

作者：

Kim, Y ^{[1
]}

Kimm, K

机构：

[1] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[2] Sungkyunkwan Univ, Inst Basic Sci, Suwon 440746, South Korea

来源：

PHYSICAL REVIEW D | 1998年 / 58卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.58.107701

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A Bogomol'nyi-type bound is constructed for topological solitons in the O(3) nonlinear sigma model coupled to gravity with a negative cosmological constant. Spacetimes made by self-dual solutions form a class of Godel-type universes. We also show that static Nielsen-Olesen vortices saturate the Bogomol'nyi-type bound only when the cosmological constant vanishes. [S0556-2821(98)03220-2].

引用

页数：4

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