THE EFFECTIVE ELECTRON-ELECTRON INTERACTION IN THE 2D HUBBARD-MODEL

Authors
BULUT N SCALAPINO DJ
Citation
N. Bulut et Dj. Scalapino, THE EFFECTIVE ELECTRON-ELECTRON INTERACTION IN THE 2D HUBBARD-MODEL, Journal of physics and chemistry of solids, 54(10), 1993, pp. 1109-1113
Citations number
6
Categorie Soggetti
Physics, Condensed Matter",Chemistry
Journal title
Journal of physics and chemistry of solids → ACNP
ISSN journal
00223697
Volume
54
Issue
10
Year of publication
1993
Pages
1109 - 1113
Database
ISI
SICI code
0022-3697(1993)54:10<1109:TEEIIT>2.0.ZU;2-G
Abstract
Monte Carlo results for the irreducible particle-particle interaction in the two-dimensional Hubbard model are compared with a renormalized RPA single spin-fluctuation exchange interaction. Reasonable agreement is found for the parameter range which has been studied, giving suppo rt to the idea that the effective electron-electron interaction in the weak to moderately coupled Hubbard model arises from the exchange of single para-antiferromagnetic spin fluctuations.