223 citations
- Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Parma26 papers
- Politecnico di TorinoIT16 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeIT10 papers
- National Interuniversity Consortium for the Physical Sciences of MatterIT7 papers
- University of LeedsGB5 papers
- University of SalernoIT5 papers
- Bielefeld UniversityDE4 papers
- Centre National de la Recherche ScientifiqueFR4 papers
- European Organization for Nuclear ResearchCH4 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT4 papers
- University of FlorenceIT4 papers
- Institut des Hautes Études ScientifiquesFR3 papers
4 papers · 1 filter
Mean-field phase diagram of cold lattice bosons in disordered potentials
P. Buonsante, V. Penna, A. Vezzani +1
We show that a site-dependent mean-field approach captures the quantum phases of the disordered Bose-Hubbard model commonly adopted to describe ultracold bosons in random optical l…
Strong-coupling expansions for the topologically inhomogeneous Bose-Hubbard model
P. Buonsante, V. Penna, A. Vezzani
We consider a Bose-Hubbard model with an arbitrary hopping term and provide the boundary of the insulating phase thereof in terms of third-order strong coupling perturbative expans…
Topology-induced confined superfluidity in inhomogeneous arrays
P. Buonsante, R. Burioni, D. Cassi +2
We report the first study of the zero-temperature phase diagram of the Bose-Hubbard model on topologically inhomogeneous arrays. We show that the usual Mott-insulator and superflui…
Phase Diagram for Ultracold Bosons in Optical Lattices and Superlattices
Pierfrancesco Buonsante, Alessandro Vezzani
We present an analytic description of the finite-temperature phase diagram of the Bose-Hubbard model, successfully describing the physics of cold bosonic atoms trapped in optical l…