THE UNSATURATED MAGNETISM IN THE U=INFINITY HUBBARD LADDER MODEL

Authors
KRIVNOV VY OVCHINNIKOV AA
Citation
Vy. Krivnov et Aa. Ovchinnikov, THE UNSATURATED MAGNETISM IN THE U=INFINITY HUBBARD LADDER MODEL, Physics letters. A, 248(5-6), 1998, pp. 453-456
Citations number
17
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
248
Issue
5-6
Year of publication
1998
Pages
453 - 456
Database
ISI
SICI code
0375-9601(1998)248:5-6<453:TUMITU>2.0.ZU;2-2
Abstract
The ground state energy and the ground state spin in the double-chain Hubbard model with infinite interaction are calculated using the varia tional wave function in the matrix-product;form. The critical electron ic density is determined below which the Nagaoka state is unstable. Th ere is a region of the electronic density where the ground state with the intermediate spin exists. (C) 1998 Elsevier Science B.V.