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

        2020-04-29 08:51:21任曉靜葛楠楠
        關(guān)鍵詞:二次方程孤子對(duì)數(shù)

        任曉靜 葛楠楠

        摘要:運(yùn)用簡(jiǎn)化的齊次平衡法(SHB),導(dǎo)出(3+1)維KP-Boussinesq和BKP-Boussinesq方程的非線性變換,借助非線性變換,得到這兩個(gè)方程的單孤子和雙孤子解,豐富了其精確解系。

        關(guān)鍵詞:KP-Boussinesq方程; BKP-Boussinesq方程; 簡(jiǎn)化的齊次平衡法; 非線性變換; 孤子解

        中圖分類號(hào):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 結(jié)語(yǔ)

        本文借助非線性變換,將求解(3+1)維KP-Boussinesq和BKP-Boussinesq方程轉(zhuǎn)變?yōu)榍蠼鈨蓚€(gè)相應(yīng)的齊二次方程,由于齊二次方程有指數(shù)形式的解,把選取的解代入非線性變換,可得這兩個(gè)方程的單孤子和雙孤子解。通過求解方程,可發(fā)現(xiàn)該方法簡(jiǎn)明有效,且每一個(gè)非線性變換只對(duì)應(yīng)一個(gè)齊二次方程。下一步會(huì)對(duì)n維對(duì)數(shù)型的非線性方程進(jìn)行研究[11-13]。

        參考文獻(xiàn):

        [1] WAZWAZ A M. Multiple-soliton solutions for a (3+1)-dimensional generalized KP equation[J].Commun Nonlinear Sci Numer Simulat, 2012, 17(2):491-495.

        [2] MA W X, XIA T C. Pfaffianized systems for a generalized Kadomtsev-Petviashvili equation[J].Phys Scr, 2013, 87(5):055003.

        [3] MA W X, ZHU Z N. Solving the (3+1)-dimensional generalized KP and BKP equations by the multiple exp-function algorithm[J].Appl Math Comput, 2012,218(24):11871-11879.

        [4] WAZWAZ A M, EL-TANTAWY S A. A new (3+1)-dimensional generalized Kadomtsev-Petviashvili equation[J].Nonlinear Dyn, 2016, 84(2):1107-1112.

        [5] WAZWAZ A M, EL-TANTAWY S A. Solving the (3+1)-dimensional KP-Boussinesq and BKP-Boussinesq equations by the simplified Hirota′s method[J].Nonlinear Dyn, 2017, 88(4):3017-3021.

        [6] SUN B N, WAZWAZ A M. General high-order breathers and rogue waves in the (3+1)-dimensional KP-Boussinesq equation[J].Commun Nonlinear Sci Numer Simulat, 2018, 64:1-13.

        [7] YAN X W, TIAN S F, DONG M J, et al. Bcklund transformation,rogue wave solutions and interaction phenomena for a (3+1)-dimensional B-type Kadomtsev-Petviashvili-Boussinesq equation[J].Nonlinear Dyn, 2018, 92(2):709-720.

        [8] WANG M L, LI X Z. Simplified homogeneous balance method and its applications to the Whitham-Broer-Kaup model equations[J].J Appl Phys, 2014, 2(8):823-827.

        [9] WANG M L, ZHANG J L, LI X Z.Decay mode solutions to cylindrical KP equation[J].Appl Math Lett, 2016, 62:29-34.

        [10]WANG M L, LI X Z, ZHANG J L. Two-soliton solution to a generalized KP equation with general variable coefficients[J].Appl Math Lett, 2018, 76: 21-27.

        [11]WANG M L, ZHANG J L, LI X Z. N-dimensional Auto-Bcklund transformation and exact solutions to n-dimensional Burgers system[J].Appl Math Lett, 2017, 63:46-52.

        [12]WAZWAZ A M. Gaussian solitary wave solutions for nonlinear evolution equations with logarithmic nonlinearities[J].Nonlinear Dyn, 2016, 83(1/2): 591-596.

        [13]WAZWAZ A M, EL-TANTAWY S A. A new integrable (3+1)-dimensional KdV-like model with its multiple-soliton solutions[J].Nonlinear Dyn, 2016, 83(3):1529-1534.

        (編 輯 張 歡)

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