Inverse Problems 14 (1998), 1371-1383

Localized Solitons of Hyperbolic su(N) AKNS System

Zi-Xiang Zhou

Abstract

Using the nonlinear constraint and Darboux transformation methods, the (m1,...,mN) localized solitons of the hyperbolic su(N) AKNS system are constructed. Here "hyperbolic su(N)" means that the first part of the Lax pair is Fy=JFx+U(x,y,t)F where J is constant real diagonal and U*=-U. When different solitons move in different velocities, each component Uij of the solution U has at most mimj peaks as t tends to infinity. This corresponds to the (M,N) solitons for the DSI equation. When all the solitons move in the same velocity, Uij still has at most mimj peaks if the phase differences are large enough.

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