Affiliation:
1. Department of Physics and Physical Oceanography
Abstract
A recently introduced recurrence-relation ansatz applied to the Bose-Hubbard model is
here used in the Fermi-Hubbard model. The resulting modified Fermi-Hubbard model is soluble
and exhibits a continuous phase transition (second order) reminiscent of the integer quantum Hall
resistance and a ground-state, first-order phase transition.
Publisher
National Academy of Sciences of the Republic of Armenia