We study analytically and numerically modulational instability for the discrete deformable nonlinear Schrodinger (NLS) equation which represents a natural link between the properties of the integrable Ablowitz-Ladik model and the nonintegrable discrete NLS equation. We show how different discretizations of the nonlinear interaction change modulational instability in the lattice and, correspondingly, conditions for localized modes to exist.

MODULATIONAL INSTABILITIES IN THE DISCRETE DEFORMABLE NONLINEAR SCHRODINGER-EQUATION

SALERNO, Mario
1994-01-01

Abstract

We study analytically and numerically modulational instability for the discrete deformable nonlinear Schrodinger (NLS) equation which represents a natural link between the properties of the integrable Ablowitz-Ladik model and the nonintegrable discrete NLS equation. We show how different discretizations of the nonlinear interaction change modulational instability in the lattice and, correspondingly, conditions for localized modes to exist.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3018946
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