Journal article
HAMILTONIAN MOMENTS AND THE LANCZOS METHOD IN THE HEISENBERG-MODEL
LCL HOLLENBERG, CJ GRIFFIN
AUSTRALIAN JOURNAL OF PHYSICS | C S I R O PUBLICATIONS | Published : 1992
DOI: 10.1071/ph920717
Abstract
The connected Hamiltonian moments (Hn)c of the one-dimensional s = ~ Heisenberg model with respect to the Neel state are calculated up to n = 17. Subsequent calculation of the Hamiltonian moments (Hn) allows the first nine iterations of the Lanczos diagonalisation to be determined analytically for arbitrary lattice size.