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arXiv 2402.08352nlin.SInlin.PS
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求解 Ablowitz–Ladik 方程的 Riemann–Hilbert 方法:高阶情形

Riemann--Hilbert method to the Ablowitz--Ladik equation: higher-order case

Huan Liu, Jing Shen, Xianguo Geng

AI总结:

本文针对零背景且含 N 对多重极点的 Ablowitz–Ladik 方程,建立正、反散射映射与带留数条件的矩阵 Riemann–Hilbert 问题,从而得到无反射高阶孤子及无穷阶孤子解。

摘要:

我们研究零背景上的 Ablowitz–Ladik 方程,特别考虑存在 N 对多重极点的情形。首要目标是建立初始数据与散射数据之间的映射;通过分析与 N 对高阶零点相关的离散谱,我们由此引入正问题。随后,我们构造了从散射数据到一个 2×2 矩阵 Riemann–Hilbert 问题的另一映射,该问题在 N 对多重极点处设有若干留数条件。通过基于该 Riemann–Hilbert 问题刻画反问题,我们在无反射情形下推导出高阶孤子解。此外,我们利用一种特殊的 Riemann–Hilbert 问题表述给出了一个无穷阶孤子解。

英文摘要:

We focused on the Ablowitz--Ladik equation on a zero background, specifically considering the scenario of $N$ pairs of multiple poles. Our first goal was to establish a mapping between the initial data and the scattering data. This allowed us to introduce a direct problem by analyzing the discrete spectrum associated with $N$ pairs of higher-order zeros. Next, we constructed another mapping from the scattering data to a $2\times2$ matrix Riemann--Hilbert problem equipped with several residue conditions set at $N$ pairs of multiple poles. By characterizing the inverse problem based on this Riemann--Hilbert problem, we were able to derive higher-order soliton solutions in the reflectionless case. Furthermore, we expressed an infinite-order soliton solution using a special Riemann--Hilbert problem formulation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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