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[Licence| Download | New Version Template] abgc_v1_0.gz(6 Kbytes)
Manuscript Title: Computation of Brody-Moshinsky brackets.
Authors: A. Lejeune, J.P. Jeukenne
Catalogue identifier: ABGC_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 2(1971)231
Programming language: Fortran.
Computer: IBM 360/65.
Operating system: 0S 360.
RAM: 8K words
Word size: 64
Keywords: Nuclear spectra, Nuclear structure, Two-body operator matrix elements, Hartree-Fock calculations, Brody-moshinsky Brackets.
Classification: 17.17.

Subprograms used:
Cat Id Title Reference
ABMA_v1_0 RACAH CPC 1(1970)337

Nature of problem:
The program computes the Brody-Moshinsky brackets defined in M. Moshinsky, Nucl. Phys. 13 (1959) 104 and appearing in the calculation of matrix elements of two-body operators, when the single particle radial wave functions are those of a harmonic oscillator. Such matrix elements are encountered in shell-model and Hartree-Fock calculations.

Solution method:
A recursion relation connecting Brody-Moshinsky brackets (B.M.B.) with incresing n1, n2 indices is used. The structure of the program is such that a minimum size core is needed to calculate the B.M.B.

In the present form of the program, restrictions come only from the allowed dimensions which are sufficient for values of the indices n1, n2 <=5. For higher values of the indices, these dimensions may easily be incresed, so that the size restrictions depend only on the computer storage available.

Running time:
The running time is 0.40 s for indices n1, n2 equal to 0,1 on the IBM 360/65 computer at the University of Liege.