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- Pierfrancesco Buonsante, Alessandro Vezzani
- Physical review letters
- 2007

We analyze the quantum phase transition in the Bose-Hubbard model borrowing two tools from quantum-information theory, i.e., the ground-state fidelity and entanglement measures. We consider systemsâ€¦ (More)

- Pierfrancesco Buonsante, Salvatore Marco Giampaolo, Fabrizio Illuminati, Vittorio Penna, Alessandro Vezzani
- Physical review letters
- 2008

We investigate the properties of strongly interacting heteronuclear boson-boson mixtures loaded in realistic optical lattices, with particular emphasis on the physics of interfaces. In particular, weâ€¦ (More)

The mean-field pictures based on the standard time-dependent variational approach have been widely used in the study of nonlinear many-boson systems such as the Bose-Hubbard model. The mean-fieldâ€¦ (More)

- Pierfrancesco Buonsante, Roberto Franzosi, Augusto Smerzi
- Physical review. E
- 2017

The notion of negative absolute temperature emerges naturally from Boltzmann's definition of "surface" microcanonical entropy in isolated systems with a bounded energy density. Recently, theâ€¦ (More)

We study the dynamical stability of the macroscopic quantum oscillations characterizing a system of three coupled Bose-Einstein condensates arranged into an open-chain geometry. The bosonâ€¦ (More)

We report a multiple-site mean-field analysis of the zero-temperature phase diagram for ultracold bosons in realistic optical superlattices. The system of interacting bosons is described by aâ€¦ (More)

â€“ The dynamics of a mean-field model of three coupled condensates is studied for initial states characterized by twin condensates. Condensates occupy an open three-well chain, where the centralâ€¦ (More)

- Pierfrancesco Buonsante, Raffaella Burioni, Alessandro Vezzani
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2011

We consider correlated LÃ©vy walks on a class of two- and three-dimensional deterministic self-similar structures, with correlation between steps induced by the geometrical distribution of regions,â€¦ (More)

- Pierfrancesco Buonsante, Raffaella Burioni, Davide Cassi, I. Meccoli, Sofia Regina, A. VezzaniIstituto

A quantum particle on a general discrete structure with a local external potential is described by a generalized tight-binding Hamiltonian on a graph. Here we show that this model can be naturallyâ€¦ (More)

We introduce a thermal dynamics for the Ising ferromagnet where the energy variations occurring within the system exhibit a diffusive character typical of thermalizing agents such as e.g. localizedâ€¦ (More)