计算物理 ›› 1994, Vol. 11 ›› Issue (2): 161-166.

• 论文 • 上一篇    下一篇

一类带扰动的Sine-Gordon方程的谱方法

郭柏灵1, 吴相辉2   

  1. 1. 北京应用物理与计算数学研究所, 北京 100088;
    2. 中山大学, 广州 510275
  • 收稿日期:1992-07-15 修回日期:1993-08-24 出版日期:1994-06-25 发布日期:1994-06-25

THE SPECTRAL METHOD FOR A PERTURBED SINE-GORDON EQUATION

Guo Boling1, Wu Xianghui2   

  1. 1. Institute of Applied physics and Computational Methematics, BeiJing 100088;
    2. Zhongshan University, Guangzhou 510275
  • Received:1992-07-15 Revised:1993-08-24 Online:1994-06-25 Published:1994-06-25

摘要: 研究一类具扰动的Sine-Gordon方程utt-uxx+αsinu-βuxxt=g(u),t>0,-∞< x< ∞的周期初值问题,提出了谱方法,并用先验估计方法作了误差估计,证明了近似方法的收敛性,并得到了该问题广义解的存在、唯一性。

关键词: 扰动Sine-Gordon方法, 谱方法, 收敛性

Abstract: A pertured sine-Gordon equation utt-uxx+αsinu-βuxxt=g(u),t>0,-∞< x< ∞,with the periodic initial and boundary value problem is studied. A spectral method is proposed,a priori estimates are established and the existnce and uniqueness are proved for the generalized solution.The error estimates are given and the convergence is proved for the approximate solution of the spectral method.

Key words: A pertured sine-Gordon equation, the spectral method, The convergence

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