Strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux

Kolley, F., Piraud, M., McCulloch, I.P., Schollwock, U. and Heidrich-Meisner, F. (2015) Strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux. New Journal of Physics, 17 9: . doi:10.1088/1367-2630/17/9/092001


Author Kolley, F.
Piraud, M.
McCulloch, I.P.
Schollwock, U.
Heidrich-Meisner, F.
Title Strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2015-09-09
Year available 2015
Sub-type Article (original research)
DOI 10.1088/1367-2630/17/9/092001
Open Access Status DOI
Volume 17
Issue 9
Total pages 11
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Collection year 2016
Language eng
Abstract We perform a density-matrix renormalization-group study of strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux. Focusing on one-third filling, we explore the phase diagram in dependence of the magnetic flux and the inter-leg tunneling strength. We find several phases including a Meissner phase, vortex liquids, a vortex lattice, as well as a staggered-current (SC) phase. Moreover, there are regions where the chiral current reverses its direction, both in the Meissner and in the SC phase. While the reversal in the latter case can be ascribed to spontaneous breaking of translational invariance, in the first it stems from an effective flux increase in the rung direction. Interactions are a necessary ingredient to realize either type of chiral-current reversal.
Keyword Synthetic gauge fields
Three-leg ladder
Quantum gas
Vortex lattice
Chiral current
DMRG
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
 
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