Decompositions of the Kadomtsev-Petviashvili equation and their symmetry reductions  

作　　者：陈孜童 贾曼 郝夏芝 楼森岳 Zitong Chen;Man Jia;Xiazhi Hao;Senyue Lou(School of Mathematics and Statistics,Ningbo University,Ningbo 315211,China;School of Physical Science and Technology,Ningbo University,Ningbo 315211,China;College of Science,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]School of Mathematics and Statistics,Ningbo University,Ningbo 315211,China [2]School of Physical Science and Technology,Ningbo University,Ningbo 315211,China [3]College of Science,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Chinese Physics B》2024年第3期150-159,共10页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 12235007, 11975131, and 12275144);the K. C. Wong Magna Fund in Ningbo University;the Natural Science Foundation of Zhejiang Province of China (Grant No. LQ20A010009)

摘　　要：Starting with a decomposition conjecture,we carefully explain the basic decompositions for the Kadomtsev-Petviashvili(KP)equation as well as the necessary calculation procedures,and it is shown that the KP equation allows the Burgers-STO(BSTO)decomposition,two types of reducible coupled BSTO decompositions and the BSTO-KdV decomposition.Furthermore,we concentrate ourselves on pointing out the main idea and result of Bäcklund transformation of the KP equation based on a special superposition principle in the particular context of the BSTO decompositions.Using the framework of standard Lie point symmetry theory,these decompositions are studied and the problem of computing the corresponding symmetry constraints is treated.

关 键 词：Kadomtsev-Petviashvili(KP)equation decomposition Bäcklund transformation symmetry reduction 

分 类 号：O411.1[理学—理论物理]