一种由光滑孤子解构造尖峰孤子解的方法
A method of constructing peaked soliton solution of nonlinear wave equation by using smooth soliton solution
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摘要: 提出了一种由钟状光滑孤子(或孤波)解构造尖峰孤子解的方法,即根据已知的钟状孤子(或孤波)解的形式直接拟定尖峰孤子解的形式,然后确定拟解中的待定参数,得到具体的解式.通过5个非线性方程(组)对该方法进行了验证,表明方法是可行的.钟状光滑孤子(或孤波)解与尖峰孤子解这两种性质完全不同的解可以同时存在,尖峰孤子解的表达式包含了钟状光滑孤子(或孤波)解,后者可以作为前者的特例.
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关键词:
- 非线性波方程 /
- 钟状光滑孤子(或孤波)解 /
- 尖峰孤子解
Abstract: We propose a method of obtaining peakon solution from bell-shape smooth soliton (or solitary wave)solution,i.e.constructing directly an ansatz solution of peakon according to the well-known bell-shape smooth soliton solution and then determining the coefficients in ansatz solution.The method is verified to be feasible for four nonlinear wave equations and one set of equations.The bell-shape smooth soliton (or solitary wave)solution and peakon solution can exist in the same expression and the expressions of peakon solutions include those of the bell-shape smooth soliton solutions and the latter are the special cases of the former. -
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