On the N-wave equations and soliton interactions in two and three dimensions

  • Gerdjikov V
  • Ivanov R
  • Kyuldjiev A
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Abstract

Several important examples of the N-wave equations are studied. These integrable equations can be linearized by formulation of the inverse scattering as a local Riemann-Hilbert problem (RHP). Several nontrivial reductions are presented. Such reductions can be applied to the generic N-wave equations but mainly the 3- and 4-wave interactions are presented as examples. Their one and two-soliton solutions are derived and their soliton interactions are analyzed. It is shown that additional reductions may lead to new types of soliton solutions. In particular the 4-wave equations with2×2reduction group allow breather-like solitons. Finally it is demonstrated that RHP with sewing function depending on three variables t, x and y provides some special solutions of the N-wave equations in three dimensions. © 2011 Elsevier B.V.

Author-supplied keywords

  • Rieman-Hilbert Problem
  • Solitons and soliton interactions
  • Solitons in three dimensions
  • Wave-wave interactions

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