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• W2963778003 abstract "Abstract Plane wave solutions to the cubic nonlinear Schrödinger equation on a torus have recently been shown to behave orbitally stable. Under generic perturbations of the initial data that are small in a high-order Sobolev norm, plane waves are stable over long times that extend to arbitrary negative powers of the smallness parameter. The present paper studies the question as to whether numerical discretizations by the split-step Fourier method inherit such a generic long-time stability property. This can indeed be shown under a condition of linear stability and a nonresonance condition. They can both be verified in the case of a spatially constant plane wave if the time step-size is restricted by a Courant–Friedrichs–Lewy condition (CFL condition). The proof first uses a Hamiltonian reduction and transformation and then modulated Fourier expansions in time. It provides detailed insight into the structure of the numerical solution." @default.
• W2963778003 created "2019-07-30" @default.
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• W2963778003 date "2014-04-01" @default.
• W2963778003 modified "2023-09-24" @default.
• W2963778003 title "PLANE WAVE STABILITY OF THE SPLIT-STEP FOURIER METHOD FOR THE NONLINEAR SCHRÖDINGER EQUATION" @default.
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• W2963778003 doi "https://doi.org/10.1017/fms.2014.4" @default.
• W2963778003 hasPublicationYear "2014" @default.
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