Soliton molecules and novel smooth positons for the complex modified KdV equation
Soliton molecules and novel smooth positons for the complex modified KdV equation
复制标题
复杂修正 KdV 方程的孤子分子和新颖的平滑位置
DOI:
10.1016/j.aml.2019.106168
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发表时间:
2020-05
影响因子:
3.7
通讯作者:
Biao Li
中科院分区:
文献类型:
--
作者:
Zhao Zhang;Xiangyu Yang;Biao Li
In this research, based on Darboux transformation, a molecule consisting of two identical soliton waves is firstly obtained by velocity resonance for modified KdV equation. And we also get molecules containing a plurality of solitons. Further, we study the elastic interaction between soliton molecules and typical smooth higher-order positon via semi-degenerate Darboux transformation. Last but not least, we find a new type of smooth positons called rational positons. The dynamic properties of higher-order rational positon are discussed in detail and related propositions are given in this paper. The nature of rational positons is fundamentally different from that of typical smooth positons and breather positons. The method used in this paper to get interaction solutions and rational positons can be applied to other integrable equations as well.
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