Averaging For Solitons With Nonlinearity Management
D. E. Pelinovsky, P. G. Kevrekidis, D. J. Frantzeskakis
Abstract
We develop an averaging method for solitons of the nonlinear Schrödinger equation with periodically varying nonlinearity coefficient. This method is used to effectively describe solitons in Bose-Einstein condensates, in the context of the recently proposed and experimentally realizable technique of Feshbach resonance management. Using the derived local averaged equation, we study matter-wave bright and dark solitons and demonstrate a very good agreement between solutions of the averaged and full equations.
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