Acta mathematica scientia,Series A ›› 2023, Vol. 43 ›› Issue (3): 785-794.

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Exotic Dynamics of Freak Waves in the Focusing Kundu-Eckhaus Equation

Wang Xiubin(),Tian Shoufu*()   

  1. School of Mathematics, China University of Mining and Technology, Jiangsu Xuzhou 221116
  • Received:2022-03-22 Revised:2022-09-22 Online:2023-06-26 Published:2023-06-01
  • Contact: Shoufu Tian E-mail:xbwang@cumt.edu.cn;sftian@cumt.edu.cn
  • Supported by:
    NSFC(12201622);NSFC(11975306)

Abstract:

In this work, based on Darboux transformation general higher-order freak wave solutions of the focusing Kundu-Eckhaus equation are derived by using the variable separation method. Then the dynamics of these freak wave solutions are discussed with some graphics. In particular, we observe that one four-petaled freak wave and three eye-shaped ones can coexist, in contrast to the four eye-shaped ones reported before. They demonstrate that the structure of freak waves in this paper is richer than that in the well-known nonlinear Schrödinger equation.

Key words: The focusing Kundu-Eckhaus equation, The variable separation method, Freak waves

CLC Number: 

  • O175.2
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