Effect of weak discreteness on two-soliton collisions in nonlinear Schrödinger equation

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We predict the possibility of strongly inelastic soliton collisions in a weakly discrete medium from the analysis of two-soliton solution to the nonlinear Schrodinger equation and confirm the prediction numerically. The effect turns out to be qualitatively independent on the particular type of perturbation. The conditions of mutual trapping of the colliding solitons are discussed as well.

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