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Riemann-Hilbert approach and N double-pole solutions for a nonlinear Schrödinger-type equation 下载免费PDF全文
Guofei Zhang 《中国物理 B》2022,31(11):110201-110201
We investigate the inverse scattering transform for the Schrödinger-type equation under zero boundary conditions with the Riemann-Hilbert (RH) approach. In the direct scattering process, the properties are given, such as Jost solutions, asymptotic behaviors, analyticity, the symmetries of the Jost solutions and the corresponding spectral matrix. In the inverse scattering process, the matrix RH problem is constructed for this integrable equation base on analyzing the spectral problem. Then, the reconstruction formula of potential and trace formula are also derived correspondingly. Thus, N double-pole solutions of the nonlinear Schrödinger-type equation are obtained by solving the RH problems corresponding to the reflectionless cases. Furthermore, we present a single double-pole solution by taking some parameters, and it is analyzed in detail. 相似文献
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本文将建立矩阵AKNS系列Darboux变换的行列式表示。为此,推广了Sylvester恒等式,并利用它化简Darboux迭带所致的行列式 最后,给出了几个著名的矩阵孤立子方程,如矩阵KdV、矩阵NLS、矩阵MKdV等的孤立子解。 相似文献
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利用可积系统的思想,借助三维Minkowski空间L3的矩阵模型,研究了L3中具有调和逆平均曲率的类空曲面和洛伦兹调和逆平均曲率类时曲面的可积性及其形变. 相似文献
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本文讨论了一类可积的非线性微分差分方程的规范变换、贝克隆变换和贝克隆变换的可交换性及非线性叠加公式.同时也给出了这类可积方程的无穷多个守恒量的递推关系. 相似文献
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积分型Darboux变换 总被引:2,自引:0,他引:2
Darboux变换是求解孤立子方程的有力工具,针对方程的特殊性(如与方程相联系的Lax对受到某种限制)需建立相应的Darboux变换本文通过引进一种新的积分型Darboux变换,用来求解一类Lax对为反自共轭算子的孤立子方程,并给出了这种新的Darboux变换的迭代式 相似文献