A new Fortran program for CFPs of an identical fermion system

2019-12-06T07:43:23Z (GMT) by Jia-jun Wang Qi-zhi Han Yu-xin Liu
Abstract A new Fortran program called CFPSIF is introduced. Using the new recurrent formula obtained by us the program CFPSIF calculates the fractional parentage coefficients (CFPs) of an identical fermion system with well-defined seniority. The recurrent process is controlled by the multiplicity of the irreducible representations (IRREPs) of group O(3) in the reduction SP (N) ⊃ O(3). It is shown that the program CFPSIF is more efficient than the program GENESIS, especially for a system with a relativ... Title of program: CFPSIF Catalogue Id: ADAB_v1_0 Nature of problem The program calculates all the coefficients of fractional parentage (CFPs)[1] of identical fermion system, by using the recurrent relations [2] with well-defined seniority. It is of fundamental importance in constructing a many-particle wave function with well-defined permutational symmetry and total angular momentum CFPs method is one of the most efficient method for construction of such wave functions. It is an iterative method, namely, the n-particle wave function is constructed from (n-1) pa ... Versions of this program held in the CPC repository in Mendeley Data ADAB_v1_0; CFPSIF; 10.1016/0010-4655(94)00123-J This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)