A discrete Darboux-Lax scheme for integrable difference equations

Abstract

We propose a discrete Darboux-Lax scheme for deriving auto-Bäcklund transformations and constructing solutions to quad-graph equations that do not necessarily possess the 3D consistency property. As an illustrative example we use the Adler-Yamilov type system which is related to the nonlinear Schrödinger (NLS) equation [19]. In particular, we construct an auto-Bäcklund transformation for this discrete system, its superposition principle, and we employ them in the construction of the one- and two-soliton solutions of the Adler-Yamilov system.

arXiv comment14 pages, 4 figures

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Cited by in corpus (1)

• Noncommutative solutions to Zamolodchikov's tetrahedron equation and matrix six-factorisation problems