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Reversible soliton motion

Scroggie, A.J. and Jeffers, J. and McCartney, G. and Oppo, G.L. (2005) Reversible soliton motion. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 71 (4). ISSN 1063-651X

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We show that spatial solitons on either phase- or amplitude-modulated backgrounds can change their direction of motion according to the modulation frequency. A soliton may, therefore, move up or down phase gradients or remain motionless regardless of where it is in relation to the background modulation. The general theory is in good agreement with numerical results in a variety of nonlinear systems.