耦合Hirota方程高阶孤子解的动力学特性分析
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国家自然科学基金资助项目(12372026),山西省自然科学基金(202203021211086), 山西省回国留学人员科研资助项目(2022-150)


Dynamical Characteristics Analysis of Higher-Order Soliton Solutions for the Coupled Hirota Equation
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    摘要:

    基于二分量耦合Hirota方程,研究该方程的高阶孤子解并分析其动力学特性.利用Lax对和广义Darboux变换,对该方程的特征函数进行泰勒展开,推导出Hirota方程二阶、三阶孤子解的表达式.分情况讨论谱参数λ的实部和虚部,选取不同的自由参数,通过数值模拟得到孤子间相互作用演化图;分析不同参数对孤子振幅变化和传播方向的影响.结果表明,对参数的不同取值会影响孤子之间的相互作用以及传播方向.

    Abstract:

    On the basis of the two-component coupled Hirota equation, the higher-order solitons solution of the equation is investigated, and dynamical characteristics is analyzed. Based on the Lax pair and generalized Darboux transformation, the Taylor expansion of the characteristic function is carried out, and the expressions of the second-order and third-order soliton solutions of Hirota equation are derived. The real and imaginary parts of spectral parameter λ are discussed in different cases. Under the influence of the value of different free parameters, the evolution graphs of soliton interaction are obtained via numerical simulation. The effects of different parameters on the amplitude change and propagation direction of solitons are analyzed. The results show that different values of parameters affect the interaction and propagation direction of solitons.

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文竹妍,刘亚停,郭翔鹰,宋妮.耦合Hirota方程高阶孤子解的动力学特性分析[J].动力学与控制学报,2025,23(2):17~22; Wen ZhuYan, Liu YaTing, Guo XiangYing, Song Ni. Dynamical Characteristics Analysis of Higher-Order Soliton Solutions for the Coupled Hirota Equation[J]. Journal of Dynamics and Control,2025,23(2):17-22.

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  • 收稿日期:2024-07-06
  • 最后修改日期:2024-07-28
  • 在线发布日期: 2025-03-13
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