Study of a toy model and its relation to the Hubbard model with infinite range hopping

Details Study of a toy model and its relation to the Hubbard model with infinite range hopping Study of a toy model and its relation to the Hubbard model with infinite range hopping

1995-11-11

arxiv.org/abs/cond-mat/9511050v1

Physics

Condensed Matter

13 pages, no figures, e-mail: flaviono@cbpfsu1.cat.cbpf.br

Scientific paper

A toy model of strongly correlated fermions is studied using Green function
and functional integration methods. The model exhibits a metal-insulator
transition as the interaction is varied. In the case of unrestricted hopping is
established the equivalence of the model with the Hubbard model with infinite
range hopping. The generalization to the case with $N$ components is made.

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