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TITLE Finite difference scheme for two-dimensional periodic nonlinear Schrodinger equations
KIAS AUTHORS Yang, Changhun
JOURNAL JOURNAL OF EVOLUTION EQUATIONS, 2021
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ABSTRACT A nonlinear Schrodinger equation (NLS) on a periodic box can be discretized as a discrete nonlinear Schrodinger equation (DNLS) on a periodic cubic lattice, which is a system of finitely many ordinary differential equations. We show that in two spatial dimensions, solutions to the DNLS converge strongly in L-2 to those of the NLS as the grid size h > 0 approaches zero. As a result, the effectiveness of the finite difference method (FDM) is justified for the two-dimensional periodic NLS.
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