(3+1)维KP-Boussinesq和BKP-Boussinesq方程的孤子解

2020-04-29 08:51任晓静葛楠楠
关键词:二次方程孤子对数

任晓静 葛楠楠

摘要:运用简化的齐次平衡法(SHB),导出(3+1)维KP-Boussinesq和BKP-Boussinesq方程的非线性变换,借助非线性变换,得到这两个方程的单孤子和双孤子解,丰富了其精确解系。

关键词:KP-Boussinesq方程; BKP-Boussinesq方程; 简化的齐次平衡法; 非线性变换; 孤子解

中图分类号:O175.29

DOI:10.16152/j.cnki.xdxbzr.2020-06-010

Soliton solutions of (3+1)-dimensional KP-Boussinesq andBKP-Boussinesq equations

REN Xiaojing, GE Nannan

(School of Mathematics, Northwest University, Xi′an 710127, China)

Abstract: Using the simplified homogeneous balance method(SHB), the nonlinear transformation of the (3+1)-dimensional KP-Boussinesq and BKP-Boussinesq equations are derived. With the help of nonlinear transformations, the one-soliton and two-soliton solutions of these two equations are obtained, enriching their exact solution system.

Key words: KP-Boussinesq equation; BKP-Boussinesq equation; simplified homogeneous balance; nonlinear transformation; soliton solutions

3 结语

本文借助非线性变换,将求解(3+1)维KP-Boussinesq和BKP-Boussinesq方程转变为求解两个相应的齐二次方程,由于齐二次方程有指数形式的解,把选取的解代入非线性变换,可得这两个方程的单孤子和双孤子解。通过求解方程,可发现该方法简明有效,且每一个非线性变换只对应一个齐二次方程。下一步会对n维对数型的非线性方程进行研究[11-13]。

参考文献:

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(編 辑 张 欢)

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