PT不变的非局部变系数Fokas-Lenells方程:非标准Hirota双线性化、对称保持与破缺多孤子解
PT-invariant nonlocal variable-coefficient Fokas-Lenells equation: nonstandard Hirota bilinearization, symmetry-preserving and breaking multi-soliton solutions
- Cotton University(科顿大学)
- Indian Institute of Technology Kharagpur(印度理工学院卡拉格普尔分校)
- Bharathidasan University(巴拉蒂达桑大学)
机构由 AI 辅助整理,请以论文原文为准。
AI总结:
本文研究变系数Fokas-Lenells系统,通过非局部对称约化得到PT不变方程,证明其Lax可积性,并用非标准Hirota双线性化构造单、双孤子解,揭示对称性保持或破缺及周期波结构。
AI中文摘要:
本文研究了一个具有增益/损耗的变系数Fokas-Lenells系统。通过应用非局部对称约化,该系统在色散和非线性系数的特定约束下,导出了一个PT不变的变系数Fokas-Lenells方程(vcFLE)。我们证明了该系统的Lax可积性,并利用非标准Hirota双线性化方法构造了单孤子和双孤子解。我们表明,根据孤子参数的不同,这些解可以保持或违反潜在的对称性。通过适当选择色散和非线性,该系统展现出周期波和孤子结构。
英文摘要:
In this paper, we explore a variable-coefficient Fokas-Lenells system with gain/loss. Applying a nonlocal symmetry reduction, the system leads to a PT-invariant variable-coefficient Fokas-Lenells equation (vcFLE) with specific constraints on dispersion and nonlinearity coefficients. We prove the Lax integrability of the given system and construct one- and two-soliton solutions using a nonstandard Hirota bilinearization method. We show that, depending on the soliton parameters, the solutions can retain or violate the underlying symmetry. With appropriate choice of dispersion and nonlinearity, the system shows periodic-wave and soliton structures.