Bosonic lattice systems with nontrivial interactions represent an intriguing platform to study exotic phases of matter. Here, we study the effects of extended correlated hopping processes in a system of bosons trapped in a lattice geometry. The interplay between single particle tunneling terms, correlated hopping processes, and onsite repulsion is studied by means of a combination of exact diagonalization, strong coupling expansion, and cluster mean field theory. We identify a rich ground state phase diagram where, apart from the usual Mott and superfluid states, superfluid phases with interesting clustering properties occur.
Clustered superfluids in the one-dimensional Bose-Hubbard model with extended correlated hopping / Stasinska, J.; Dutta, O.; Barbiero, L.; Lewenstein, M.; Chhajlany, R. W.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - ELETTRONICO. - 103:13(2021). [10.1103/PhysRevB.103.134513]
Clustered superfluids in the one-dimensional Bose-Hubbard model with extended correlated hopping
Barbiero L.;
2021
Abstract
Bosonic lattice systems with nontrivial interactions represent an intriguing platform to study exotic phases of matter. Here, we study the effects of extended correlated hopping processes in a system of bosons trapped in a lattice geometry. The interplay between single particle tunneling terms, correlated hopping processes, and onsite repulsion is studied by means of a combination of exact diagonalization, strong coupling expansion, and cluster mean field theory. We identify a rich ground state phase diagram where, apart from the usual Mott and superfluid states, superfluid phases with interesting clustering properties occur.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2959121