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cond-mat.stat-mech2003
Renormalization Group Approach to the Infrared Behavior of a Zero-Temperature Bose System
F. Pistolesi, C. Castellani, C. Di Castro +1
We exploit the renormalization-group approach to establish the {\em exact} infrared behavior of an interacting Bose system at zero temperature. The local-gauge symmetry in the brok…
cond-mat.str-el2003
Phase Separation close to the density-driven Mott transition in the Hubbard-Holstein model
M. Capone, G. Sangiovanni, C. Castellani +2
The density driven Mott transition is studied by means of Dynamical Mean-Field Theory in the Hubbard-Holstein model, where the Hubbard term leading to the Mott transition is supple…