Hubbard model with infinite-range hopping

R. Németh

Physica A: Statistical Mechanics and its Applications, 1990, vol. 163, issue 2, 672-682

Abstract: We investigate the Hubbard model with infinite range hopping. The model is not equivalent to the infinite range Heisenberg model and shows no phase transition contrary to the latter. A sufficient condition for the interchange of the U → ∞ and thermodynamic limit is given. We calculate the zero temperature magnetization and conjecture the linear dependence on the filling factor for arbitrary dimensions.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:163:y:1990:i:2:p:672-682

DOI: 10.1016/0378-4371(90)90151-H

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