Computer Physics Communications Program Library

Programs in Physics & Physical Chemistry

PROGRAM SUMMARY

Manuscript Title: A program for generating one-particle and two-particle coefficients of fractional parentage for the single j-orbit with isospin
Authors: A. Deveikis
Program title: CFPjOrbit, EnumCFP
Catalogue identifier: ADWI
Journal reference: Comput. Phys. Commun. 173(2005)186
Programming language: FORTRAN 90.
Computer: Any computer with a FORTRAN 90 compiler.
Operating system: Windows 2000.
RAM: 100MB
Keywords: Nuclear shell model, coefficients of fractional parentage, antisymmetric A-particle states, jj-coupling.
PACS: 03.65.-w, 02.70.-c, 03.65.Fd, 02.90.+p.
Classification: 17.19.
Nature of problem: Generating the list of one-particle and two-particle coefficients of fractional parentage for the single j-orbit with isospin.
Solution method: The method is based on the algorithm presented in [1] for the spectral decomposition of an antisymmetrization operator matrix Y. The coefficients of fractional parentage are the eigenvectors of a certain antisymmetrization operator matrix Y that correspond to its unit eigenvalues.
Restrictions: The full sets of one-particle and two-particle coefficients of fractional parentage up to the j = 9/2 orbit; the number of particles in the higher j-orbits should be restricted. The enumeration of coefficients of fractional parentage up to the j = 15/2 orbit; the number of particles in the higher j-orbits should be restricted.
Unusual features: Possibility to select subsets of one-particle and two-particle coefficients of fractional parentage for calculation.
Running time: Of the order of a few seconds for lower j-orbits to hours for the complete j = 9/2 orbit calculations.
References:
[1]	A. Deveikis, R.K. Kalinauskas, B.R. Barrett, Annals of Physics. 296(2002)287.