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arXiv math-ph/0702030math-phmath.MP
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一类扰动sine-Gordon方程的显式行波解

Some explicit travelling-wave solutions of a perturbed sine-Gordon equation

Gaetano Fiore

摘要:

本文给出了一类扰动sine-Gordon方程的某些特殊行波解的封闭形式(在实直线上或圆上)。该方程的微扰由一个常强迫项$γ$和一个线性耗散项组成,它被用来描述超导理论中的约瑟夫森效应和其它一些显著的物理现象。我们确定所有单位速度(无量纲单位)的行波解。对于不大于1的$|γ|$,我们发现解族都是明显不稳定的(除了明显的常数解),而对于$|γ|>1$,我们发现稳定解族描述每个解族都是均匀分布的扭结。

英文摘要:

We present in closed form some special travelling-wave solutions (on the real line or on the circle) of a perturbed sine-Gordon equation. The perturbation of the equation consists of a constant forcing term $γ$ and a linear dissipative term, and the equation is used to describe the Josephson effect in the theory of superconductors and other remarkable physical phenomena. We determine all travelling-wave solutions with unit velocity (in dimensionless units). For $|γ|$ not larger than 1 we find families of solutions that are all (except the obvious constant one) manifestly unstable, whereas for $|γ|>1$ we find families of stable solutions describing each an array of evenly spaced kinks.

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。

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