# SPINSGA: A program package for the evaluation of properties of spin- 1 2 Heisenberg systems using the symmetric group approach

## Description

Abstract A set of programs for computing properties of spin-1/2 Heisenberg lattices is presented. The programs make full use of the spin symmetry inherent in these systems by operating in the fully S, M-adapted spin basis. This considerably reduces dimensions of the Hamiltonian matrices to be diagonalized. Properties, such as energies and correlation functions, are calculated after determination of the corresponding wavefunctions. Since the calculations are independent of lattice symmetries, the progr... Title of program: SPINSGA Catalogue Id: ADGN_v1_0 Nature of problem This code computes different properties of spin-1/2 Heisenberg systems like ground state energies and wavefunctions and correlation functions. Versions of this program held in the CPC repository in Mendeley Data ADGN_v1_0; SPINSGA; 10.1016/S0010-4655(97)00073-8 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)