Multiple Lax integrable higher dimensional AKNS(-1) equations and sine-Gordon equations

被引:0
|
作者
Cheng, Xueping [1 ]
Jin, Guiming [2 ]
Wang, Jianan [2 ]
机构
[1] Zhejiang Univ Sci & Technol, Sch Sci, Hangzhou 310023, Peoples R China
[2] Zhejiang Ocean Univ, Sch Informat Engn, Zhoushan 316022, Peoples R China
基金
中国国家自然科学基金;
关键词
CONSERVATION-LAWS; TRANSFORMATIONS; MODELS;
D O I
10.1063/5.0223870
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Through the modified deformation algorithm related to conservation laws, the (1+1)-dimensional AKNS(-1) equations are extended to a (4+1)-dimensional AKNS(-1) system. When one, two, or three of the independent variables are removed, the (4+1)-dimensional AKNS(-1) system degenerates to some novel (3+1)-dimensional, (2+1)-dimensional, and (1+1)-dimensional AKNS(-1) systems, respectively. Under a simple dependent transformation, the (1+1)-dimensional AKNS(-1) equations turn into the classical sine-Gordon equation. Then using the same deformation procedure, the (1+1)-dimensional sine-Gordon equation is generalized to a (3+1)-dimensional version. By introducing the deformation operators to the Lax pairs of the original (1+1)-dimensional models, the Lax integrability of both the (4+1)-dimensional AKNS(-1) system and the (3+1)-dimensional sine-Gordon equation is proven. Finally, the traveling wave solutions of the (4+1)-dimensional AKNS(-1) system and the (3+1)-dimensional sine-Gordon equation are implicitly given and expressed by tanh function and incomplete elliptic integral, respectively. These results may enhance our understanding of the complex physical phenomena described by the nonlinear system discussed in this paper.
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页数:10
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