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arXiv · cond-mat/0409009

Modulational Instabilities and Domain Walls in Coupled Discrete Nonlinear Schrödinger Equations

Z. Rapti·A. Trombettoni·P. G. Kevrekidis·D. J. Frantzeskakis·Boris A. Malomed·A. R. Bishop
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Abstract

We consider a system of two discrete nonlinear Schrödinger equations, coupled by nonlinear and linear terms. For various physically relevant cases, we derive a modulational instability criterion for plane-wave solutions. We also find and examine domain-wall solutions in the model with the linear coupling.

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Z. Rapti, A. Trombettoni, P. G. Kevrekidis, D. J. Frantzeskakis, Boris A. Malomed, A. R. Bishop. 2004-09-01. Modulational Instabilities and Domain Walls in Coupled Discrete Nonlinear Schrödinger Equations. https://doi.org/10.1016/j.physleta.2004.07.052

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