On Separation of Variables for Integrable Equations of Soliton Type

Abstract

We propose a general scheme for separation of variables in the integrable Hamiltonian systems on orbits of the loop algebra $\mathfrak{sl}(2,\mathbb{C})\times \mathcal{P}(\lambda ,{\lambda }^{-1})$. In particular, we illustrate the scheme by application to modified Korteweg--de Vries (MKdV), sin(sinh)-Gordon, nonlinear Schrödinger, and Heisenberg magnetic equations.

22 pages

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