ENERGY AND CHEMICAL-POTENTIAL IN THE 2-DIMENSIONAL HUBBARD-MODEL

Authors
MANCINI F MARRA S MATSUMOTO H
Citation
F. Mancini et al., ENERGY AND CHEMICAL-POTENTIAL IN THE 2-DIMENSIONAL HUBBARD-MODEL, Physica. C, Superconductivity, 250(1-2), 1995, pp. 184-190
Citations number
27
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
250
Issue
1-2
Year of publication
1995
Pages
184 - 190
Database
ISI
SICI code
0921-4534(1995)250:1-2<184:EACIT2>2.0.ZU;2-4
Abstract
The two-dimensional Hubbard model is studied by means of the composite -operator approach. In a generalized mean-field approximation we calcu late the ground-state energy and the chemical potential, for various v alues of the particle density, repulsive Coulomb interaction and tempe rature. Comparison with the results obtained by other authors by means of numerical analysis shows a good agreement.