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N-soliton solutions and elastic interaction of the coupled lattice soliton equations for nonlinear waves

机译:非线性波的孤子解的N孤子解和弹性相互作用

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摘要

With the aid of symbolic computation, a coupled set of the lattice soliton equations is investigated via Darboux transformation (DT) method. The N-fold DT and conservation laws are constructed based on its Lax representation. The N-soliton solutions in terms of the Vandermonde-like determinants are derived. Structures of the one-, two-, three- and four-soliton solutions are shown graphically. Elastic interactions among the four solitons are discussed: solitonic shapes and amplitudes have not changed after the interaction. Results in this paper might be helpful for understanding the propagation of nonlinear waves.
机译:借助于符号计算,通过达布变换(DT)方法研究了一组晶格孤子方程组。 N倍DT和守恒定律是基于其Lax表示构造的。推导了以范德蒙德样行列式表示的N孤子解。一,二,三和四孤子解决方案的结构以图形方式显示。讨论了四个孤子之间的弹性相互作用:相互作用后,孤子的形状和振幅没有改变。本文的结果可能有助于理解非线性波的传播。

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