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arXiv · 1305.6636

Rational solitons of wave resonant interaction models

Antonio Degasperis·Sara Lombardo
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Abstract

Integrable models of resonant interaction of two or more waves in 1+1 dimensions are known to be of applicative interest in several areas. Here we consider a system of three coupled wave equations which includes as special cases the vector Nonlinear Schroedinger equations and the equations describing the resonant interaction of three waves. The Darboux-Dressing construction of soliton solutions is applied under the condition that the solutions have rational, or mixed rational-exponential, dependence on coordinates. Our algebraic construction relies on the use of nilpotent matrices and their Jordan form. We systematically search for all bounded rational (mixed rational-exponential) solutions and find, for the first time to our knowledge, a broad family of such solutions of the three wave resonant interaction equations.

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Antonio Degasperis, Sara Lombardo. 2013-05-28. Rational solitons of wave resonant interaction models. https://doi.org/10.1103/physreve.88.052914

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