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中国物理学会期刊

高阶Ablowitz-Ladik方程的局域波解及稳定性分析

CSTR: 32037.14.aps.69.20191235

Dynamics of localized wave solutions for a higher-order Ablowitz-Ladik equation

CSTR: 32037.14.aps.69.20191235
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  • 本文构造了一类高阶Ablowitz-Ladik方程的广义(M, N-M)-波Darboux变换, 借助符号计算从不同背景出发研究了该模型丰富的局域波解, 并利用数值模拟研究了这些解的动力学稳定性.

     

    It is an important research topic to study diverse local wave interaction phenomena in nonlinear evolution equations, especially for the semi-discrete nonlinear lattice equations, there is little work on their diverse local wave interaction solutions due to the complexity and difficulty of research. In this paper, a semi-discrete higher-order Ablowitz-Ladik equation is investigated via the generalized (M, N-M)-fold Darboux transformation. With the aid of symbolic computation, diverse types of localized wave solutions are obtained starting from constant and plane wave seed background. Particularly, for the case M=N, the generalized (M, N-M)-fold Darboux transformation may reduce to the N-fold Darboux transformation which can be used to derive multi-soliton solutions from constant seed background and breather solutions from plane wave seed background, respectively. For the case M=1, the generalized (M, N-M)-fold Darboux transformation reduce to the generalized (1, N-1)-fold one which can be used to obtain rogue wave solutions from plane wave seed background. For the case M=2, the generalized (M, N-M)-fold Darboux transformation reduce to the generalized (2, N-2)-fold one which can be used to give mixed interaction solutions of one-breather and first-order rogue wave from plane wave seed background. To study the propagation characteristics of such localized waves, the numerical simulations are used to explore the dynamical stability of such obtained solutions. Results obtained in the present work may be used to explain related physical phenomena in nonlinear optics and relevant fields.

     

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