The N-soliton solution of the Degasperis-Procesi equation
Abstract
This paper extends the results of the previous paper designated I hereafter in which the one- and two-soiton solutions of the Degasperis-Procesi(DP) equation were obtained and their peakon limit was considered. Here, we present the general N-soliton solution of the DP equation and investigate its property. We show that it has a novel structure expressed by a parametric representation in terms of the BKP tau-functions. A purely algebraic proof of the solution is given by establishing various identities among the tau-functions. The large time asymptotic of the solution recovers the formula for the phase shift which was derived in I by a different method. Finally, the structure of the N-soliton solution is discussed in comparison with that of the Camassa-Holm shallow water wave equation.
Cite
@article{arxiv.nlin/0511029,
title = {The N-soliton solution of the Degasperis-Procesi equation},
author = {Yoshimasa Matsuno},
journal= {arXiv preprint arXiv:nlin/0511029},
year = {2009}
}
Comments
To appear in Inverse Problems. Related paper: Y. Matsuno, Inverse Problems 21(2005)1553-1570