Quantum phases of constrained dipolar bosons in coupled one-dimensional optical lattices

2017/06/22 by Manpreet Singh, Suman Mondal, B. K. Sahoo +1 · 14 citations
Physics and Astronomy · #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dipole #Mott insulator #Optical lattice #Phase (matter) #Phase diagram #Physics #Quantum #Quantum mechanics #Quantum phase transition #Quantum phases #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #Superfluidity #cond-mat.quant-gas

paper · pdf · doi:10.1103/physreva.96.053604

published in Physical Review A 96(5) (American Physical Society) · 9 pages, 12 figures

arxiv created 2017/06/22 · openalex created_date 2017/06/30 · openalex publication_date 2017/11/01 · arxiv updated 2017/11/08 · openalex updated_date 2026/08/05

Abstract

We investigate a system of two- and three-body constrained dipolar bosons in a pair of one-dimensional optical lattices coupled to each other by nonlocal dipole-dipole interactions. Assuming attractive dipole-dipole interactions, we obtain the ground-state phase diagram of the system by employing the cluster mean-field theory. The competition between the repulsive on-site and attractive nearest-neighbor interactions between the chains yields three kinds of superfluids, namely, the trimer superfluid, the pair superfluid, and the usual single-particle superfluid along with the insulating Mott phase at the commensurate density. Additionally, we realize the simultaneous existence of Mott insulator and superfluid phases for the two- and three-body constrained bosons, respectively. We also analyze the stability of these quantum phases in the presence of a harmonic trap potential.

Citations

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