Mean field analysis of quantum phase transitions in a periodic optical superlattice

Abstract

In this paper we analyze the various phases exhibited by a system of ultracold bosons in a periodic optical superlattice using the mean field decoupling approximation. We investigate for a wide range of commensurate and incommensurate densities. We find the gapless superfluid phase, the gapped Mott insulator phase, and gapped insulator phases with distinct density wave orders.

arXiv comment6 pages, 7 figures, 4 tables

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Cited by in corpus (14)

• Phase Transitions in a Bose-Hubbard Model with Cavity-Mediated Global-Range Interactions
• Three body on-site interactions in ultracold bosonic atoms in optical lattices and superlattices
• Quantum phases of attractive bosons on a Bose-Hubbard ladder with three-body constraint
• Mean-field phase diagram of ultracold atomic gases in cavity quantum electrodynamics
• Hardcore bosons in a zig-zag optical superlattice
• Generalized Effective Potential Landau Theory for Bosonic Quadratic Superlattices
• Tunable anisotropic superfluidity in an optical kagome superlattice
• Trimer superfluid and supersolid on two-dimensional optical lattices
• Haldane Insulator in the 1D Nearest-Neighbor Extended Bose-Hubbard Model with Cavity-Mediated Long-Range Interactions
• Quantum phases of constrained bosons on a two-leg Bose-Hubbard ladder
• Mott insulator phases of non-locally coupled bosons in bilayer optical superlattices
• Quasiadiabatic dynamics of ultracold bosonic atoms in a one-dimensional optical superlattice
• Phase diagrams of bosonic $A{B}_n$ chains
• Spinor bosons in optical superlattices: a numerical study