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Original Articles

Approximation of Solitons in the Discrete NLS Equation

, , , &
Pages 124-136 | Published online: 21 Jan 2013
 

Abstract

We study four different approximations for finding the profile of discrete solitons in the one-dimensional Discrete Nonlinear Schrödinger (DNLS) Equation. Three of them are discrete approximations (namely, a variational approach, an approximation to homoclinic orbits and a Green-function approach), and the other one is a quasi-continuum approximation. All the results are compared with numerical computations.

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