Geodesic
Some properties of the Hubbard model with infinite repulsion
Teoretičeskaâ i matematičeskaâ fizika, Tome 82 (1990) no. 2, pp. 216-223 
V. Ya. Krivnov; A. A. Ovchinnikov; V. O. Cheranovskii. Some properties of the Hubbard model with infinite repulsion. Teoretičeskaâ i matematičeskaâ fizika, Tome 82 (1990) no. 2, pp. 216-223. http://geodesic.mathdoc.fr/item/TMF_1990_82_2_a5/
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     title = {Some properties of~the {Hubbard} model with infinite repulsion},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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Voir la notice de l'article provenant de la source Math-Net.Ru

The one-dimensional and quasione-dimensional Hubbard models with infinite repulsion of the electrons at one center are considered. The energy levels of the one-dimensional chains are degenerate with respect to the spin. The degeneracy is lifted by cyclization or inclusion of interchain interactions. The ground state of the quasione-dimensional systems has minimal spin.

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