变系数耦合Gross-Pitaevskii系统的可积性及其孤子解研究
首发时间:2012-01-20
摘要:本文研究的是一个变系数的耦合Gross-Pitaevskii (GP)系统,该系统与原子物质波的研究密切相关。通过Painlevé分析方法,我们得到了该系统关于可变系数的约束条件,并且得知在该条件下,该系统是Painlevé可积的。利用Hirota双线性方法和计算机符号计算方法,我们求得了该系统的双线性形式、单孤子和双孤子解,并展示出该系统孤子间的碰撞情况。
关键词: 应用数学 变系数耦合Gross-Pitaevskii系统 Painlevé分析 Hirota双线性方法 双线性形式 孤子解
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Research of Integrability and Soliton Solution for a Variable-Coefficient Coupled Gross-Pitaevskii System
Abstract:Under investigation in this paper is a variable-coefficient coupled Gross-Pitaevskii (GP) system, which is closely associated with the studies of atomic matter waves. Through Painlevé analysis, we obtain the constraint on the variable coefficients, under which the system is integrable. With the Hirota bilinear method and symbolic computation, the bilinear form, one and two soliton solutions are obtained for this system. The collisions of the solitons are also shown.
Keywords: Applied Mathematics Variable-coefficient coupled Gross-Pitaevskii system Painlevé analysis Hirota bilinear method Bilinear form Soliton solution
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