Existence of Kink Waves and Periodic Waves for a Perturbed Defocusing mKdV Equation

Existence of Kink Waves and Periodic Waves for a Perturbed Defocusing mKdV Equation
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扰动散焦mKdV方程中扭结波和周期波的存在性

DOI:
10.1007/s12346-017-0249-9
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发表时间:
2018-10
影响因子:
1.4
通讯作者:
Huang Wentao
Huang Wentao
中科院分区:
数学4区
文献类型:
--
作者:
Chen Aiyong;Guo Lina;Huang Wentao

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利用几何奇异摄动理论,建立了扰动离焦mKdV方程的扭结波和周期波的存在性。此外,利用四次椭圆哈密顿量分析了哈密顿向量场的摄动,得到了一个双鞍循环。仅通过分析阿贝尔积分的比值就证明了波速在减小,并给出了波速的极限。进一步得到了波速与行波波长的关系。
The existence of kink waves and periodic waves for a perturbed defocusing mKdV equation is established by using geometric singular perturbation theory. In addition, by analyzing the perturbation of the Hamiltonian vector field with an elliptic Hamiltonian of degree four, a two saddle cycle is exhibited. It is proven that the wave speedis decreasing onby analyzing the ratio of Abelian integrals and the limit of wave speed is given. Furthermore, the relationship between the wave speed and the wavelength of traveling waves is obtained.
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