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VOL. 3 | 2002 On the Reductions and Scattering Data for the CBC System


The reductions for the first order linear systems of the type: \[ L \psi (x,\lambda) \equiv \left(\mathbf{i} \frac{\rm d}{{\rm d}x} + q(x) - \lambda J \right) \psi (x,\lambda) = 0,\ J \in \mathfrak{h},\ q(x) \in \mathfrak{g}_J \] are studied. This system generalizes the Zakharov–Shabat system and the systems studied by Caudrey, Beals and Coifman (CBC systems). Here $J$ is a regular complex constant element of the Cartan subalgebra $\mathfrak{h} \subset \mathfrak{g}$ of the simple Lie algebra $\mathfrak{g}$ and the potential $q(x)$ takes values in the image $\mathfrak{g}_J$ of ad $_J$. Special attention is paid to the scattering data of CBC systems and their behaviour under the Weyl group reductions. The analytical properties of the generating functional of the integrals of motion and their reduced analogs are studied. These results are demonstrated on an example of $N$-wave type equations.


Published: 1 January 2002
First available in Project Euclid: 12 June 2015

zbMATH: 1219.37050
MathSciNet: MR1884851

Digital Object Identifier: 10.7546/giq-3-2002-262-277

Rights: Copyright © 2002 Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences


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