Lorentz-violating effects on topological defects generated by two real scalar fields

被引：37

作者：

Bazeia, D. ^{[1
]}

Ferreira, M. M., Jr. ^{[2
]}

Gomes, A. R. ^{[3
]}

Menezes, R. ^{[1
,4
]}

机构：

[1] Univ Fed Paraiba, Dept Fis, BR-58051970 Joao Pessoa, Paraiba, Brazil

[2] Univ Fed Maranhao, Dept Fis, BR-65085580 Sao Luis, MA, Brazil

[3] Inst Fed Educ Cencia & Tecnol Maranhao, Dept Fis, BR-65025001 Sao Luis, MA, Brazil

[4] Univ Fed Paraiba, Dept Ciencias Exatas, BR-58297000 Rio Tinto, PB, Brazil

来源：

PHYSICA D-NONLINEAR PHENOMENA | 2010年 / 239卷 / 12期

关键词：

Lorentz violation; Domain wall; Stability; COMPOSITE SOLITARY WAVES; DOMAIN-WALLS; CPT VIOLATION; CRYSTALLINE POLYETHYLENE; SYMMETRY-BREAKING; STANDARD-MODEL; STRINGS; CAUSALITY; TWISTONS; SOLITONS;

D O I：

10.1016/j.physd.2010.01.015

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The influence of a Lorentz violation on soliton solutions generated by a system of two coupled scalar fields is investigated. Lorentz violation is induced by a fixed tensor coefficient that couples the two fields. The Bogomol'nyi method is applied and first-order differential equations are obtained whose solutions minimize the energy and are also solutions of the equations of motion. The analysis of the solutions in phase space shows how the stability is modified with the Lorentz violation. It is shown explicitly that the solutions preserve linear stability despite the presence of Lorentz violation. Considering Lorentz violation as a small perturbation, an analytical method is employed to yield analytical solutions. Crown Copyright (c) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：942 / 947

页数：6

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