An extended two-dimensional Toda lattice hierarchy and two-dimensional Toda lattice with self-consistent sources

An extended two-dimensional Toda lattice hierarchy and two-dimensional Toda lattice with self-consistent sources
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扩展的二维 Toda 格层次和具有自洽源的二维 Toda 格

DOI:
10.1063/1.2976685
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发表时间:
2007-10
影响因子:
1.3
通讯作者:
Liu, Xiaojun
Liu, Xiaojun
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Lin, Runliang;Zeng, Yunbo;Liu, Xiaojun

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我们扩展了二维户田晶格层次(2DTLH)的平方本征函数对称性。这种扩展的2DTLH(ex2DTLH)包括二维户田晶格方程与自洽源(2DTLSCS)作为其第一个非平凡方程。给出了ex2DTLH的Lax表示。借助于Lax表示,通过对2DTLSCS的自Backlund达布变换应用常数变分,构造了2DTLSCS的非自Backlund达布变换.这个DT使我们能够找到2DTLSCS的许多解决方案,包括孤子,合理的解决方案,位置,双光子,和复。
We extend the two-dimensional Toda lattice hierarchy (2DTLH) by its squared eigenfunction symmetries. This extended 2DTLH (ex2DTLH) includes the two-dimensional Toda lattice equation with self-consistent sources (2DTLSCS) as its first nontrivial equation. Lax representation of ex2DTLH is also presented. With the help of the Lax representation, we construct a nonauto-Backlund Darboux transformation (DT) for 2DTLSCS by applying the variation of constants to 2DTLSCS auto-Backlund DT. This DT enables us to find many solutions to 2DTLSCS, including solitons, rational solutions, positons, negatons, and complexitons.
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