Discrete Artificial Boundary Conditions for the Time-Dependent Schrodinger Equation

Document Type : Original Article

Authors

1 Department of Mathematics, Ro.C., Islamic Azad University, Roudehen, Iran

2 Department of Mathematics, Qom University of Technology, Qom, Iran

Abstract
In this paper, we construct discrete artificial boundary conditions to solve the one-dimensional time-dependent Schrodinger
equation on unbounded domain. After introducing an artificial boundary, we get an initial-boundary value problem with a finite computational domain which is equivalent to the original problem. Then we propose a polynomial basis set that is extendable to any desired higher-order accuracy. This method is based on the Constrained Interpolation Profile(CIP) method and it's a kind of semi-Lagrangian scheme . In this study, CIP method is applied and analytical results with the finite difference method compared. The results obtained in this study have clarified that the CIP method provides higher accuracy than those obtained using the finite difference method.

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Articles in Press, Accepted Manuscript
Available Online from 22 October 2026

  • Receive Date 26 April 2026
  • Revise Date 09 September 2026
  • Accept Date 14 September 2026