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arXiv 2005.10847nlin.SInlin.PS
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三波共振相互作用系统中的一般反常波

General rogue waves in the three-wave resonant interaction systems

Bo Yang, Jianke Yang

摘要:

用双线性方法导出了(1+1)维三波共振相互作用系统中的一般反常波。这些解被分成三族,分别对应于某个四次方程降维后的一个单根、两个单根和一个二重根。结果表明,对于三波相互作用方程中的非线性系数的所有符号,第一类与单根相关联的解都存在,而另外两类与两个单根和一个双根相关联的解只存在于所谓的孤子交换情形,其中非线性系数具有一定的符号.这些流氓波的解决方案,如那些与两个简单的根,和高阶的解决方案与一个简单的根,是新的解决方案,以前没有报道过。从技术上讲,我们的双线性推导流氓波的双根情况下实现了推广到以前的降维过程中的双线性方法,这个广义的过程允许我们处理根的任意多重性。派生流氓波的动力学也检查,并提出了新的流氓波图案。本文还解释了这些双线性异常波与以前用达布变换导出的异常波之间的联系。

英文摘要:

General rogue waves in (1+1)-dimensional three-wave resonant interaction systems are derived by the bilinear method. These solutions are divided into three families, which correspond to a simple root, two simple roots and a double root of a certain quartic equation arising from the dimension reduction respectively. It is shown that while the first family of solutions associated with a simple root exist for all signs of the nonlinear coefficients in the three-wave interaction equations, the other two families of solutions associated with two simple roots and a double root can only exist in the so-called soliton-exchange case, where the nonlinear coefficients have certain signs. Many of these rogue wave solutions, such as those associated with two simple roots, and higher-order solutions associated with a simple root, are new solutions which have not been reported before. Technically, our bilinear derivation of rogue waves for the double-root case is achieved by a generalization to the previous dimension reduction procedure in the bilinear method, and this generalized procedure allows us to treat roots of arbitrary multiplicities. Dynamics of the derived rogue waves is also examined, and new rogue-wave patterns are presented. Connection between these bilinear rogue waves and those derived earlier by Darboux transformation is also explained.

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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