PROJECTOR QUANTUM MONTE-CARLO SIMULATIONS OF THE HUBBARD-MODEL - STAGGERED MAGNETIZATION

Authors
HETZEL RE TOPALIS P BECKER KW
Citation
Re. Hetzel et al., PROJECTOR QUANTUM MONTE-CARLO SIMULATIONS OF THE HUBBARD-MODEL - STAGGERED MAGNETIZATION, Physica. B, Condensed matter, 230, 1997, pp. 1041-1043
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
230
Year of publication
1997
Pages
1041 - 1043
Database
ISI
SICI code
0921-4526(1997)230:<1041:PQMSOT>2.0.ZU;2-O
Abstract
We have used the projector quantum Monte Carlo method to study the mag netic properties of the two-dimensional Hubbard model at half-filling as a function of the on-site repulsion U. Applying spin-density waves as initial trial state, we obtain excellent convergence of the algorit hm for the case of weak and of strong correlations. This choice allows us to calculate directly the staggered (or sublattice) magnetization m(0) as a function of U.