Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

Lily Maysari Angraini, I Wayan Sudiarta

Abstract

The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation. Starting with results of the unmodified FDTD method, Numerov-FD and NSFD are applied iteratively to produce more accurate results for eigen energies and wavefunctios. Three potential wells, infinite square well, harmonic oscillator and Poschl-Teller, are used to compare results of FDTD calculations. Significant improvements in the results for the infinite square potential and the harmonic oscillator potential are found using Numerov-NSFD scheme, and for Poschl-Teller potential are found using Numerov scheme.

Keywords

Finite difference time domain method, Time-dependent Schrodinger equations, Non-standard scheme, Numerov scheme

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References

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DOI: https://doi.org/10.20961/jphystheor-appl.v2i1.26352

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