Soliton-radiation coupling in the parametrically driven, damped nonlinear Schrödinger equation

Details Soliton-radiation coupling in the parametrically driven, damped nonlinear Schrödinger equation Soliton-radiation coupling in the parametrically driven, damped nonlinear Schrödinger equation

2001-11-14

arxiv.org/abs/nlin/0111034v1

Nonlinear Sciences

Pattern Formation and Solitons

36 pages, 6 figures

Scientific paper

We use the Riemann-Hilbert problem to study the interaction of the soliton with radiation in the parametrically driven, damped nonlinear Schr\"odinger equation. The analysis is reduced to the study of a finite-dimensional dynamical system for the amplitude and phase of the soliton and the complex amplitude of the long-wavelength radiation. In contrast to previously utilised Inverse Scattering-based perturbation techniques, our approach is valid for arbitrarily large driving strengths and damping coefficients. We show that, contrary to suggestions made in literature, the complexity observed in the soliton's dynamics cannot be accounted for just by its coupling to the long-wavelength radiation.

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