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cond-mat1996★ 5 cited
Strong coupling phases of the Hubbard model
J. Gonzalez, J. V. Alvarez
We study the strong coupling regime of the Hubbard model,filled up to the level of the van Hove singularities, by means of an exact diagonalization approach. We characterize…
cond-mat1995★ 3 cited
Nonperturbative approach to the Hubbard model in C60 cluster
J. Gonzalez, J. V. Alvarez
We propose a computational scheme for the Hubbard model in the C60 cluster in which the interaction with the Fermi sea of charges added to the neutral molecule is switched on seque…