Soliton Solutions for ABS Lattice Equations II: Casoratians and Bilinearization

Details Soliton Solutions for ABS Lattice Equations II: Casoratians and Bilinearization Soliton Solutions for ABS Lattice Equations II: Casoratians and Bilinearization

2009-03-10

arxiv.org/abs/0903.1717v1

J. Phys. A: Math. Theor. 42 (2009) 404006

Nonlinear Sciences

Exactly Solvable and Integrable Systems

36 pages

Scientific paper

10.1088/1751-8113/42/40/404006

In Part I [arXiv:0902.4873 [nlin.SI]] soliton solutions to the ABS list of multi-dimensionally consistent difference equations (except Q4) were derived using connection between the Q3 equation and the NQC equations, and then by reductions. In that work central role was played by a Cauchy matrix. In this work we use a different approach, we derive the $N$-soliton solutions following Hirota's direct and constructive method. This leads to Casoratians and bilinear difference equations. We give here details for the H-series of equations and for Q1; the results for Q3 have been given earlier.

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