Journal
COMPUTER PHYSICS COMMUNICATIONS
Volume 181, Issue 1, Pages 43-51Publisher
ELSEVIER
DOI: 10.1016/j.cpc.2009.08.015
Keywords
Nonlinear Schrodinger equation (NLS); Gross-Pitaevskii equation (GP); Operator splitting; Compact split-step finite difference method; (SSFD)
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We propose a compact split-step finite difference method to solve the nonlinear Schrodinger equations with constant and variable coefficients. This method improves the accuracy of split-step finite difference method by introducing a compact scheme for discretization of space variable while this improvement does not reduce the stability range and does not increase the computational cost. This method also preserves some conservation laws. Numerical tests are presented to confirm the theoretical results for the new numerical method by using the cubic nonlinear Schrodinger equation with constant and variable coefficients and Gross-Pitaevskii equation. (C) 2009 Elsevier B.V. All rights reserved.
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