Vortex and Meissner phases of strongly interacting bosons on a two-leg ladder

Piraud, M., Heidrich-Meisner, F., McCulloch, I. P., Greschner, S., Vekua, T. and Schollwöck, U. (2015) Vortex and Meissner phases of strongly interacting bosons on a two-leg ladder. Physical Review B - Condensed Matter and Materials Physics, 91 14: 140406.1-140406.5. doi:10.1103/PhysRevB.91.140406

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Author Piraud, M.
Heidrich-Meisner, F.
McCulloch, I. P.
Greschner, S.
Vekua, T.
Schollwöck, U.
Title Vortex and Meissner phases of strongly interacting bosons on a two-leg ladder
Journal name Physical Review B - Condensed Matter and Materials Physics   Check publisher's open access policy
ISSN 1550-235X
Publication date 2015-04-10
Sub-type Article (original research)
DOI 10.1103/PhysRevB.91.140406
Open Access Status File (Publisher version)
Volume 91
Issue 14
Start page 140406.1
End page 140406.5
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2016
Language eng
Formatted abstract
We establish the phase diagram of the strongly interacting Bose-Hubbard model defined on a two-leg ladder geometry in the presence of a homogeneous flux. Our work is motivated by a recent experiment [M. Atala et al., Nat. Phys. 10, 588 (2014)], which studied the same system, in the complementary regime of weak interactions. Based on extensive density matrix renormalization group simulations and a bosonization analysis, we fully explore the parameter space spanned by filling, interleg tunneling, and flux. As a main result, we demonstrate the existence of gapless and gapped Meissner and vortex phases, with the gapped states emerging in Mott-insulating regimes. We calculate experimentally accessible observables such as chiral currents and vortex patterns.
Keyword Phase diagram
Bose-hubbard model
Mott insulators
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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Citation counts: TR Web of Science Citation Count  Cited 23 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 19 times in Scopus Article | Citations
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