上海大学学报(自然科学版) ›› 2011, Vol. 17 ›› Issue (3): 280-285.doi: 10.3969/j.issn.1007-2861.2011.03.013

• 数理化科学 • 上一篇    下一篇

Sine-Gordon方程的极限对称及应用

  

  1. 上海大学 理学院, 上海 200444
  • 收稿日期:2010-12-08 出版日期:2011-06-24 发布日期:2011-06-24

Limit Symmetry of Sine-Gordon Equation and Applications

  1. College of Sciences, Shanghai University, Shanghai 200444, China
  • Received:2010-12-08 Online:2011-06-24 Published:2011-06-24

摘要: 研究sine-Gordon方程的极限对称及应用.由对称引出相似约化,求得sine-Gordon 方程的极限解;利用对称与孤子方程的自相容源之间的联系,得到带新自相容源的sine-Gordon方程,并求出该方程的解.

关键词: Hirota方法, sine-Gordon方程, 对称, 相似约化, 自相容源

Abstract: Limit symmetry of the sine-Gordon equation and its applications are considered. The similarity reduction leads to limit solutions of the sineGordon equation. Besides, based on the relationship between symmetries and sources of soliton equations, a sine-Gordon equation with new selfconsistent sources is obtained and its solutions are derived.

Key words: Hirota method, self-consistent sources, similarity reduction, sine-Gordon equation, symmetries

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