An efficient implementation of high-order coupled-cluster techniques applied to quantum magnets
Statistical Mechanics
2017-08-24 v1
Abstract
We illustrate how the systematic inclusion of multi-spin correlations of the quantum spin-lattice systems can be efficiently implemented within the framework of the coupled-cluster method by examining the ground-state properties of both the square-lattice and the frustrated triangular-lattice quantum antiferromagnets. Various physical quantities including the ground-state energy, the anisotropy susceptibility, and the sublattice magnetisation are calculated and compared with those obtained from such other methods as series expansions and quantum Monte Carlo simulations.
Cite
@article{arxiv.cond-mat/9611012,
title = {An efficient implementation of high-order coupled-cluster techniques applied to quantum magnets},
author = {Chen Zeng and D. J. J. Farnell and R. F. Bishop},
journal= {arXiv preprint arXiv:cond-mat/9611012},
year = {2017}
}
Comments
25 pages, including 8 figures