排序方式: 共有38条查询结果,搜索用时 15 毫秒
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In this paper, the dispersionless D-type Drinfeld-Sokolov hierarchy, i.e. a reduction of the dispersionless two-component BKP hierarchy, is studied. The additional symmetry flows of this hierarchy are presented. These flows form an infinite-dimensional Lie algebra of Block type as well as a Lie algebra of Hamiltonian type. 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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Deformed soliton,breather,and rogue wave solutions of an inhomogeneous nonlinear Schrdinger equation 下载免费PDF全文
We use the 1-fold Darboux transformation (DT) of an inhomogeneous nonlinear Schro¨dinger equation (INLSE) to construct the deformed-soliton, breather, and rogue wave solutions explicitly. Furthermore, the obtained first-order deformed rogue wave solution, which is derived from the deformed breather solution through the Taylor expansion, is different from the known rogue wave solution of the nonlinear Schro¨dinger equation (NLSE). The effect of inhomogeneity is fully reflected in the variable height of the deformed soliton and the curved background of the deformed breather and rogue wave. By suitably adjusting the physical parameter, we show that a desired shape of the rogue wave can be generated. In particular, the newly constructed rogue wave can be reduced to the corresponding rogue wave of the nonlinear Schro¨dinger equation under a suitable parametric condition. 相似文献
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简并完全未消除情形下的二级微扰公式 总被引:3,自引:0,他引:3
本文修改了在一级近似下简并完全未消除情形下的二级修正公式,并以平面转子在外电场中微扰为例说明其应用。 相似文献
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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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In this paper, we derive a general formula of the flow equtions for the Harry-Dym hierarchy. And three applications in n-reduction, (2+1)-dimensional generalization, and Kupershmidt reduction, are considered. 相似文献
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