THE DIMER-CLUSTER FERMI-LINEARIZED HUBBARD MODEL: GROUND STATE AND PHASE SPACE
Arianna Montorsi, Mario Rasetti
The zero temperature phase space for the Hubbard model is constructed — in the frame of fermionic linearization with a two-site (dimer) cluster — resorting to its ground state, realized in the form of supercoherent state for the model dynamical superalgebra. Such phase space is characterized by the existence of regions in which the pairing order parameter is different from zero.
Modern Physics Letters B•May 10, 1990•5 citations