## Proceedings of the International Conference on Geometry, Integrability and Quantization

### On the Reductions and Scattering Data for the CBC System

Georgi Grahovski

#### Abstract

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.

#### Article information

Dates
First available in Project Euclid: 12 June 2015

https://projecteuclid.org/ euclid.pgiq/1434145473

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

Mathematical Reviews number (MathSciNet)
MR1884851

Zentralblatt MATH identifier
1219.37050

#### Citation

Grahovski, Georgi. On the Reductions and Scattering Data for the CBC System. Proceedings of the Third International Conference on Geometry, Integrability and Quantization, 262--277, Coral Press Scientific Publishing, Sofia, Bulgaria, 2002. doi:10.7546/giq-3-2002-262-277. https://projecteuclid.org/euclid.pgiq/1434145473