The Anyon Hubbard Model in One-Dimensional Optical Lattices

2015/01/31 by Sebastian Greschner, Luis Santos · 1 citation
Physics and Astronomy · #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.115.053002

published as Phys. Rev. Lett. 115, 053002 (2015) · 5 pages, 4 figures

arxiv created 2015/07/12 · arxiv updated 2015/08/05

Abstract

Raman-assisted hopping may be used to realize the anyon Hubbard model in one-dimensional optical lattices. We propose a feasible scenario that significantly improves the proposal of [T. Keilmann et al., Nature Commun. 2, 361 (2011)], allowing as well for an exact realization of the two-body hard-core constraint, and for controllable effective interactions without the need of Feshbach resonances. We show that the combination of anyonic statistics and two-body hard-core constraint leads to a rich ground state physics, including Mott insulators with attractive interactions, pair superfluids, dimer phases, and multicritical points. Moreover, the anyonic statistics results in a novel two-component superfluid of holon and doublon dimers, characterized by a large but finite compressibility and a multipeaked momentum distribution, which may be easily revealed experimentally.

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