✦ LIBER ✦

FDEXTR, a program for the finite-difference solution of the coupled-channel Schrödinger equation using Richardson extrapolation

✍ Scribed by A.G. Abrashkevich; D.G. Abrashkevich

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 763 KB
Volume: 82
Category: Article
ISSN: 0010-4655
DOI: 10.1016/0010-4655(94)90169-4

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✦ Synopsis

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 seco~idorder 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 eige~valuesand eigenfunctions. Zero-value (Dirichlet) or zero-gradient (Neumann) boundary conditions are con~idered.

PROGRAM SUMMARY

Operating systems under which the program has been tested: AIX 3.2.2, ULTRIX 4.2A, DEC OSF/l vI.2, OpenVMS Alpha 1.5, VAX/VMS 5.~-2,SunOs 4.1.2, HP/UX 9.01, Title ofprogram: FDEXTR Irix 4.05, MS-DOS 6.0, MS-Windows 3.1 Catalogue number.'

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