arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv math-ph/0512002math-phmath.MP
收藏

一类修正的sine-Gordon方程的扭解和其它行波解

On kinks and other travelling-wave solutions of a modified sine-Gordon equation

Gaetano Fiore, Gabriele Guerriero, Alfonso Maio, Enrico Mazziotti

摘要:

本文给出了描述超导理论中约瑟夫森效应和其它显著物理现象的扰动sine-Gordon方程(在实直线上或圆上)的精确行波解的详尽的非微扰分类。方程的摄动由一个常数强迫项和一个线性耗散项组成。在实直线上,具有有界能量密度的候选轨道稳定解要么是常数解,要么是扭结(即孤子)型解,要么是扭结阵列型解,要么是“半扭结阵列”型解.虽然前三种有未受干扰的类似物,但最后一种类型本质上是新的。我们还提出了一个收敛的方法,逐步逼近的(反)扭结解的基础上仔细应用的不动点定理。

英文摘要:

We give an exhaustive, non-perturbative classification of exact travelling-wave solutions of a perturbed sine-Gordon equation (on the real line or on the circle) which is used to describe the Josephson effect in the theory of superconductors and other remarkable physical phenomena. The perturbation of the equation consists of a constant forcing term and a linear dissipative term. On the real line candidate orbitally stable solutions with bounded energy density are either the constant one, or of kink (i.e. soliton) type, or of array-of-kinks type, or of "half-array-of-kinks" type. While the first three have unperturbed analogs, the last type is essentially new. We also propose a convergent method of successive approximations of the (anti)kink solution based on a careful application of the fixed point theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑