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arXiv 0906.3955nlin.SI
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格点Boussinesq方程的多孤子解

Multisoliton solutions to the lattice Boussinesq equation

Jarmo Hietarinta, Da-jun Zhang

摘要:

格点Boussinesq方程(BSQ)是定义在2D格点的基本正方形上的三分量差分-差分方程,具有3D一致性。我们写在广田双线性形式的方程,并构造其多孤子解的Casoratians,在我们以前的论文中的方法。在构造中,我们需要两个不同的项$[(a-ωk)/(a-k)]^n$和$[(a-ω^2 k)/(a-k)]^n$,而不是通常的指数离散化为$[(a+k)/(a-k)]^n$,其中$ω$是单位的立方根$\neq 1$。

英文摘要:

The lattice Boussinesq equation (BSQ) is a three-component difference-difference equation defined on an elementary square of the 2D lattice, having 3D consistency. We write the equations in the Hirota bilinear form and construct their multisoliton solutions in terms of Casoratians, following the methodology in our previous papers. In the construction it turns out that instead of the usual discretization of the exponential as $[(a+k)/(a-k)]^n$ we need two different terms $[(a-ωk)/(a-k)]^n$ and $[(a-ω^2 k)/(a-k)]^n$, where $ω$ is a cubic root of unity $\neq 1$.

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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