Bäcklund transformations and homoclinic structures for the integrable discretization of the NLS equation

1992 ◽  
Vol 163 (3) ◽  
pp. 181-187 ◽  
Author(s):  
Yanguang Li
Keyword(s):  
Bäcklund Transformations ◽  
Nls Equation ◽  
Backlund Transformations ◽  
Integrable Discretization

On the Heisenberg Supermagnet Model in (2+1)-Dimensions

2017 ◽  
Vol 72 (4) ◽  
pp. 331-337 ◽  
Author(s):  
Zhao-Wen Yan
Keyword(s):  
Integrable System ◽  
Integrable Systems ◽  
Bäcklund Transformations ◽  
Quadratic Constraints ◽  
Backlund Transformations

AbstractThe Heisenberg supermagnet model is an important supersymmetric integrable system in (1+1)-dimensions. We construct two types of the (2+1)-dimensional integrable Heisenberg supermagnet models with the quadratic constraints and investigate the integrability of the systems. In terms of the gage transformation, we derive their gage equivalent counterparts. Furthermore, we also construct new solutions of the supersymmetric integrable systems by means of the Bäcklund transformations.

scholarly journals On the solution of a class of second-order quasi-linear PDEs and the Gauss equation

2001 ◽  
Vol 42 (3) ◽  
pp. 312-323
Author(s):  
A. R. Selvaratnam ◽  
M. Vlieg-Hulstman ◽  
B. van-Brunt ◽  
W. D. Halford
Keyword(s):  
Gaussian Curvature ◽  
Gordon Equation ◽  
Second Order ◽  
Bäcklund Transformations ◽  
Coordinate Systems ◽  
Gauss Equation ◽  
Sine Gordon Equation ◽  
Partial Differential ◽  
Metric Tensor ◽  
Backlund Transformations

AbstractGauss' Theorema Egregium produces a partial differential equation which relates the Gaussian curvature K to components of the metric tensor and its derivatives. Well-known partial differential equations (PDEs) such as the Schrödinger equation and the sine-Gordon equation can be derived from Gauss' equation for specific choices of K and coördinate systems. In this paper we consider a class of Bäcklund Transformations which corresponds to coördinate transformations on surfaces with a given Gaussian curvature. These Bäcklund Transformations lead to the construction of solutions to certain classes of non-linear second order PDEs of hyperbolic type by identifying these PDEs as the Gauss equation in some coördinate system. The possibility of solving the Cauchy Problem has also been explored for these classes of equations.

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