AN EXACT RESULT ON FERROMAGNETISM IN THE HUBBARD-MODEL WITH AN INFINITE-RANGE HOPPING

Authors
PIERI P
Citation
P. Pieri, AN EXACT RESULT ON FERROMAGNETISM IN THE HUBBARD-MODEL WITH AN INFINITE-RANGE HOPPING, Physics letters. A, 235(2), 1997, pp. 183-185
Citations number
16
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
235
Issue
2
Year of publication
1997
Pages
183 - 185
Database
ISI
SICI code
0375-9601(1997)235:2<183:AEROFI>2.0.ZU;2-T
Abstract
We prove that, below quarter filling, the ground state of the Hubbard model with an infinite-range hopping t > 0 is completely degenerate wi th respect to the total spin. (C) 1997 Elsevier Science B.V.