Breathers, Transformation Mechanisms and Their Molecular State of a (3+1)-Dimensional Generalized Yu–Toda–Sasa–Fukuyama Equation

Jian Zhang, Juan Yue, Zhonglong Zhao () and Yufeng Zhang
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Jian Zhang: School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221116, China
Juan Yue: School of Mathematics, North University of China, Taiyuan 030051, China
Zhonglong Zhao: School of Mathematics, North University of China, Taiyuan 030051, China
Yufeng Zhang: School of Mathematics, China University of Mining and Technology, Xuzhou 221116, China

Mathematics, 2023, vol. 11, issue 7, 1-18

Abstract: A (3+1)-dimensional generalized Yu–Toda–Sasa–Fukuyama equation is considered systematically. N -soliton solutions are obtained using Hirota’s bilinear method. The employment of the complex conjugate condition of parameters of N -soliton solutions leads to the construction of breather solutions. Then, the lump solution is obtained with the aid of the long-wave limit method. Based on the transformation mechanism of nonlinear waves, a series of nonlinear localized waves can be transformed from breathers, which include the quasi-kink soliton, M-shaped kink soliton, oscillation M-shaped kink soliton, multi-peak kink soliton, and quasi-periodic wave by analyzing the characteristic lines. Furthermore, the molecular state of the transformed two-breather is studied using velocity resonance, which is divided into three aspects, namely the modes of non-, semi-, and full transformation. The analytical method discussed in this paper can be further applied to the investigation of other complex high-dimensional nonlinear integrable systems.

Keywords: solitons; breathers; lump; transformation mechanism; molecular state (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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