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奇异扰动MKdV-KS方程孤立波解的存在性 被引量:2

Existence of Solitary Waves in Singular Perturbed MKdV-KS Equation
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摘要 孤立波现象是很活跃的一个研究领域,但带有小扰动的方程的孤立波目前研究还较少 讨论奇异扰动MKdV KS方程孤立波解的存在性,利用孤立波与同宿轨之间的关系,通过变量替换,将MKdV KS方程约化为带快-慢变量的常微分方程组,利用奇异扰动定性理论,找出退化慢子系统的同宿轨,证明扰动之后的方程组也存在同宿轨,从而证明MKdV Geometric singular perturbation method is applied to investigate the existence of solitary waves in MKdVKS equation. Firstly, we change MKdVKS equation into slowfast ordinary differential equation system. Because solitary waves are firmly connected with homoclinic orbits, we then prove, by geometric singular perturbation method, that the perburbed system has a homoclinic orbit. Thus, the existence of solitary waves in singular perturbed MKdVKS equation is verified.
出处 《江苏大学学报(自然科学版)》 EI CAS 2003年第5期82-84,共3页 Journal of Jiangsu University:Natural Science Edition
基金 国家自然科学基金资助项目(10071003)
关键词 MKdV-KS方程 奇异扰动 孤立波 同宿轨 MKdV-KS equation geometric singular perturbation solitary wave homoclinic orbit
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参考文献4

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同被引文献21

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