56 citations · 116 across the 5 of their papers we have counts for
7 papers
Glassy features of a Bose Glass
P. Buonsante, F. Massel, V. Penna +1
We study a two-dimensional Bose-Hubbard model at a zero temperature with random local potentials in the presence of either uniform or binary disorder. Many low-energy metastable co…
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…
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…
Mean-field description of ultracold Bosons on disordered two-dimensional optical lattices
P. Buonsante, Francesco Massel, Vittorio Penna +1
In the present paper we describe the properties induced by disorder on an ultracold gas of Bosonic atoms loaded into a two-dimensional optical lattice with global confinement ensur…
Mean-field phase diagram for Bose-Hubbard Hamiltonians with random hopping
P. Buonsante, F. Massel, V. Penna +1
The zero-temperature phase diagram for ultracold Bosons in a random 1D potential is obtained through a site-decoupling mean-field scheme performed over a Bose-Hubbard (BH) Hamilton…
Mean-field algebraic approach to the dynamics of fermions in a 1D optical lattice
F. P. Massel, V. Penna
We consider a one-dimensional optical lattice of three-dimensional Harmonic Oscillators which are loaded with neutral fermionic atoms trapped into two hyperfine states. By means of…