数学物理学报 ›› 2026, Vol. 46 ›› Issue (6): 2183-2195.

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广义耦合导数非线性薛定谔方程的孤子分子、孤子共振以及 breather-positon 解

曾平平1(), 曾平安2(), 许国安3,*()   

  1. 1 浙江金融职业学院信息技术学院 杭州 310000
    2 浙江工业大学之江学院理学院 浙江绍兴 312000
    3 华侨大学数学科学学院 福建泉州 362021
  • 收稿日期:2025-07-27 修回日期:2026-03-26 出版日期:2026-12-26 发布日期:2026-08-14
  • 通讯作者: 许国安 E-mail:1360544995@qq.com;460877822@qq.com;xga99163@163.com
  • 作者简介:曾平平, E-mail: 1360544995@qq.com;
    曾平安, E-mail: 460877822@qq.com
  • 基金资助:
    国家自然科学基金(12271096);福建省自然科学基金(2025J01165)

Soliton Molecules, Soliton Resonances and Breather Positon Solutions for the General Coupled Derivative Nonlinear Schrödinger Equation

Pingping Zeng1(), Pingan Zeng2(), Guoan Xu3,*()   

  1. 1 Institute of Information Technology, Zhejiang Financial College, Hangzhou 310000
    2 School of Science, Zhijiang College of Zhejiang University of Technology, Zhejiang Shaoxing 312000
    3 School of Mathematical Sciences, Huaqiao University, Fujian Quanzhou 362021
  • Received:2025-07-27 Revised:2026-03-26 Online:2026-12-26 Published:2026-08-14
  • Contact: Guoan Xu E-mail:1360544995@qq.com;460877822@qq.com;xga99163@163.com
  • Supported by:
    NSFC(12271096);NSFFP(2025J01165)

摘要:

该文聚焦于广义耦合导数非线性薛定谔方程, 该方程以窄脉冲的非线性自变陡特性为显著特征. 基于 Lax 对, 构建行列式形式的 $N$ 重 Darboux 变换. 随后, 借助 Darboux 变换与极限技巧, 系统研究了广义耦合导数非线性薛定谔方程的孤子分子、孤子共振及 breather-positon 解. 当选取零种子解时, 可得到不同类型的 $N$ 孤子分子以及孤子分子与暗孤子/类呼吸子孤子的孤子共振. 当选取非零种子解时, 能够推导出高阶 breather-positon 解. 值得注意的是, breather-positon 解的中心区域呈现出怪波, 这促使作者提出一种猜想, 即其或许能够阐明怪波生成的潜在机制. 该文获得孤子相互作用解和 breather-positon 解的方法, 可为物理现象研究领域提供助力.

关键词: 广义耦合导数非线性薛定谔方程, Darboux 变换, 孤子分子, 孤子共振, breather-positon 解

Abstract:

In this paper, we focus on the general coupled derivative nonlinear Schrödinger equation which is distinguished by the nonlinear self-steepening of narrow pulses. Based on the Lax pair, the $N$-fold Darboux transformation in the form of determinants. Subsequently, using the Darboux transformation and limiting techniques, we can systematically study the soliton molecules, solitons resonances and breather positons for the general coupled derivative nonlinear Schrödinger equation. By choosing the zero seed solutions, different types of $N$-soliton molecules and the soliton resonances with soliton molecules and the dark soliton/breather-like soliton are obtained. Then by choosing the nonzero seed solutions, the higher-order breather positons can be derived. It is noteworthy that the central region of breather positons manifests rogue waves, thus prompting the proposal that they may elucidate the underlying mechanism of rogue wave generation. The approach shown in this paper to gain the soliton interaction solutions and breather positons can contribute to the research field of physical phenomena.

Key words: the general coupled derivative nonlinear Schr?dinger equation, Darboux transformation, soliton molecules, soliton resonances, breather positon

中图分类号: 

  • O175.29