COMPARISON BETWEEN LANCZOS AND LINKED CLUSTER-METHODS FOR THE HEISENBERG-ANTIFERROMAGNET ON A SQUARE LATTICE

Authors
MANCINI JD MASSANO WJ MURAWSKI R
Citation
Jd. Mancini et al., COMPARISON BETWEEN LANCZOS AND LINKED CLUSTER-METHODS FOR THE HEISENBERG-ANTIFERROMAGNET ON A SQUARE LATTICE, Solid state communications, 104(9), 1997, pp. 517-520
Citations number
32
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
104
Issue
9
Year of publication
1997
Pages
517 - 520
Database
ISI
SICI code
0038-1098(1997)104:9<517:CBLALC>2.0.ZU;2-A
Abstract
The Lanczos tridiagonal scheme is applied to investigate the ground-st ate energy of the 2D anisotropic XXZ Heisenberg Model. Comparisons are made with connected moments and t-expansion methods as well as a rece ntly deveoped plaquette expansion. A number of poles appear in each of the schemes, which has previously been unreported. (C) 1997 Elsevier Science Ltd.