Mah. Ahsan et al., A CONFIGURATION-SPACE TRUNCATION SCHEME FOR THE HEISENBERG SPIN-1 MODEL, Journal of physics. Condensed matter, 6(23), 1994, pp. 4375-4380
A Monte Carlo sampling technique based on 2 x 2 rotations of the Heise
nberg spin-1 Hamiltonian containing both anisotropic and next-nearest-
neighbour (NNN) terMS has been attempted. Closed rings of six, eight,
10 and 12 spin-1 sites have been studied and the ground and the first
excited states have been obtained. The validity of the procedure has a
lso been tested using the spin correlation function for the ground sta
te.