Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
arXiv:2010.14459 · doi:10.1103/PhysRevB.103.134513
Abstract
Bosonic lattice systems with non-trivial 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 on-site 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 the usual Mott and superfluid states, superfluid phases with interesting clustering properties occur.
arXiv comment9 pages, 6 figures, significantly revised arXiv:1912.13359
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