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arXiv 1012.2458nlin.SImath-phmath.APmath.MPmath.SP
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利用逆Miura映射生成新的可积系统的系统方法

Systematic method of generating new integrable systems via inverse Miura maps

Takayuki Tsuchida

摘要:

本文对可积系统的Lax表示给出了一种新的自然解释,即谱问题是原系统与其修改后的系统之间的Miura变换的线性化形式.在此基础上,我们给出了一种系统的方法来识别修改后的可积系统,这些系统可以通过Miura变换映射到给定的可积系统上.因此,该方法可用于由已知系统通过逆Miura映射生成新的可积系统,它既可用于1+1维的连续系统,也可用于2+1维的离散系统.以非线性Schroedinger(NLS)系统、Zakharov-Ito系统(二分量KdV)、三波相互作用系统、Yajima-Oikawa系统、Ablowitz-Ladik晶格(可积空间离散NLS)和两个(2+1)维NLS系统为例,说明了该方法的有效性.

英文摘要:

We provide a new natural interpretation of the Lax representation for an integrable system; that is, the spectral problem is the linearized form of a Miura transformation between the original system and a modified version of it. On the basis of this interpretation, we formulate a systematic method of identifying modified integrable systems that can be mapped to a given integrable system by Miura transformations. Thus, this method can be used to generate new integrable systems from known systems through inverse Miura maps; it can be applied to both continuous and discrete systems in 1+1 dimensions as well as in 2+1 dimensions. The effectiveness of the method is illustrated using examples such as the nonlinear Schroedinger (NLS) system, the Zakharov-Ito system (two-component KdV), the three-wave interaction system, the Yajima-Oikawa system, the Ablowitz-Ladik lattice (integrable space-discrete NLS), and two (2+1)-dimensional NLS systems.

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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