Phys. Rev. A 103, 063308 (2021) - Influence of sublattice bias on superfluid to Mott insulator transitions

Influence of sublattice bias on superfluid to Mott insulator transitions

Akshay Sawhney and Erich J. Mueller

Phys. Rev. A 103, 063308 – Published 16 June 2021

Abstract

We model the superfluid to Mott insulator transition for a Bose gas on a lattice with two inequivalent sublattices. Using the Gutzwiller ansatz, we produce phase diagrams and provide an understanding of the interplay between superfluidity on each sublattice. We explore how the Mott lobes split and describe the experimental signatures.

Received 30 March 2021
Accepted 7 June 2021

DOI:https://doi.org/10.1103/PhysRevA.103.063308

©2021 American Physical Society

Physics Subject Headings (PhySH)

Cold gases in optical lattices Mott-superfluid transition

Mott superfluids

Bose-Hubbard model

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Authors & Affiliations

Akshay Sawhney^* and Erich J. Mueller ^†

Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA

^*as2755@cornell.edu
^†em256@cornell.edu

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Issue

Vol. 103, Iss. 6 — June 2021

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