INVARIANT SUBSPACES AND GENERALIZATION OF NAGAOKAS THEOREM FOR THE HUBBARD-MODEL (U=INFINITY)

Authors
VEDYAEV AV VOLKOV AV
Citation
Av. Vedyaev et Av. Volkov, INVARIANT SUBSPACES AND GENERALIZATION OF NAGAOKAS THEOREM FOR THE HUBBARD-MODEL (U=INFINITY), Theoretical and mathematical physics, 94(1), 1993, pp. 114-116
Citations number
5
Categorie Soggetti
Mathematical Method, Physical Science",Physics,"Physycs, Mathematical
Journal title
Theoretical and mathematical physics → ACNP
ISSN journal
00405779
Volume
94
Issue
1
Year of publication
1993
Pages
114 - 116
Database
ISI
SICI code
0040-5779(1993)94:1<114:ISAGON>2.0.ZU;2-3
Abstract
The Hubbard model (U = infinity) on an arbitrary graph of sites in the presence of one hole in the system is considered. A sufficient condit ion for the absence of invariant subspaces of the space of states with fixed value of the z projection of the total spin that differ in the sets of possible spin configurations is found. A generalization of Nag aoka's results for bilobate graphs is given.