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FDEXTR

swMATH ID: 269
Software Authors: A.G. Abrashkevich, D.G. Abrashkevich
Description: FDEXTR 2.1: A new version of a program for the finite-difference solution of the coupled-channel Schrodinger equation using the Richardson extrapolation. A FORTRAN-77 program is presented which solves the Sturm-Liouville problem for a system of coupled second-order differential equations by the finite difference method of the second order using the iterative Richardson extrapolation of the difference eigensolutions on a sequence of doubly condensed meshes. The same extrapolational procedure and error estimations are applied to the eigenvalues and eigenfunctions. Zero-valued (Dirichlet) or zero-gradient (Neumann) boundary conditions are considered.
Homepage: http://cpc.cs.qub.ac.uk/summaries/ACVG_v2_0.html
Programming Languages: Fortran.
Operating Systems: UNIX4.0, AIX3.2.5, SunOS4.1.2, HP/UX9.01, Irix4.05.
Keywords: General purpose; Richardson extrapolation; Finite difference method; Schrodinger equation; Eigensolutions; Ordinary; Differential equations; Atomic; Molecular; Chemical physics.
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Cited in: 1 Document

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