223 citations · 1.2k across the 35 of their papers we have counts for
5 papers · 1 filter
Gutzwiller approach to the Bose-Hubbard model with random local impurities
P. Buonsante, F. Massel, V. Penna +1
Recently it has been suggested that fermions whose hopping amplitude is quenched to extremely low values provide a convenient source of local disorder for lattice bosonic systems r…
Unconventional quantum phases of lattice bosonic mixtures
P. Buonsante, S. M. Giampaolo, F. Illuminati +2
We consider strongly interacting boson-boson mixtures on one-dimensional lattices and, by adopting a qualitative mean-field approach, investigate their quantum phases as the inters…
Some remarks on the coherent-state variational approach to nonlinear boson models
P. Buonsante, V. Penna
The mean-field pictures based on the standard time-dependent variational approach have widely been used in the study of nonlinear many-boson systems such as the Bose-Hubbard model.…
Mixtures of strongly interacting bosons in optical lattices
P. Buonsante, S. M. Giampaolo, F. Illuminati +2
We investigate the properties of strongly interacting heteronuclear boson-boson mixtures loaded in realistic optical lattices, with particular emphasis on the physics of interfaces…
The fidelity approach to the Hubbard model
L. Campos Venuti, M. Cozzini, P. Buonsante +3
We use the fidelity approach to quantum critical points to study the zero temperature phase diagram of the one-dimensional Hubbard model. Using a variety of analytical and numerica…