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arXiv 0902.4873nlin.SI
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ABS格点方程的孤子解:I. Cauchy矩阵方法

Soliton Solutions for ABS Lattice Equations: I Cauchy Matrix Approach

Frank Nijhoff, James Atkinson, Jarmo Hietarinta

摘要:

四边形格点方程(偏差分方程)是1+1维可积偏微分方程的自然离散类似物,近年来对四边形格点方程的可积性有了新的认识。在标量(即单场)的情况下,现在存在Adler,Bobenko和Suris(ABS)的分类结果,除了自20世纪70年代末和80年代初以来已知的“KdV类型”的晶格方程之外,还产生了一些新的例子。本文回顾了KdV型格点方程孤子解的构造,并利用这些结果构造了ABS表中所有格点方程的N-孤子解,除了椭圆情形的Q4,这是留给一个单独的处理。

英文摘要:

In recent years there have been new insights into the integrability of quadrilateral lattice equations, i.e. partial difference equations which are the natural discrete analogues of integrable partial differential equations in 1+1 dimensions. In the scalar (i.e. single-field) case there now exist classification results by Adler, Bobenko and Suris (ABS) leading to some new examples in addition to the lattice equations "of KdV type" that were known since the late 1970s and early 1980s. In this paper we review the construction of soliton solutions for the KdV type lattice equations and use those results to construct N-soliton solutions for all lattice equations in the ABS list except for the elliptic case of Q4, which is left to a separate treatment.

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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