Soliton Solutions for ABS Lattice Equations: I Cauchy Matrix Approach

Abstract

In recent years there have been new insights into the integrability of quadrilateral lattice equations, i.e. partial difference equations which are the natural discrete analogues of integrable partial differential equations in 1+1 dimensions. In the scalar (i.e. single-field) case there now exist classification results by Adler, Bobenko and Suris (ABS) leading to some new examples in addition to the lattice equations "of KdV type" that were known since the late 1970s and early 1980s. In this paper we review the construction of soliton solutions for the KdV type lattice equations and use those results to construct N-soliton solutions for all lattice equations in the ABS list except for the elliptic case of Q4, which is left to a separate treatment.

40 pages, 3 figures, submitted to Journal of Physics A: Mathematical and Theoretical, Special issue on nonlinearity and geometry: connections with integrability

References in corpus (2)

• Soliton solutions for Q3
• Backlund transformations for integrable lattice equations

Cited by in corpus (29)

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