Quantum phases of bosons in double-well optical lattices

Date
Authors
Danshita, Ippei
Williams, James E.
de Melo, Carlos A. R. Sa
Clark, Charles W.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
We study the superfluid to Mott insulator transition of bosons in a two-legged ladder optical lattice, of a type accessible in current experiments on double-well optical lattices. The zero-temperature phase diagram is mapped out, with a focus on its dependence upon interchain hopping and the tilt between double wells. We find that the unit-filling Mott phase exhibits a non-monotonic behavior as a function of the tilt parameter, producing a reentrant phase transition between Mott insulator and superfluid phases.
Comment: 5 pages, 5 figures
Keywords
Condensed Matter - Other Condensed Matter
Citation
Collections