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Superfluid, solid, and supersolid phases of dipolar bosons in a quasi-one-dimensional optical lattice

Source: Phys. Rev. A 84, 051602 (2011); http://dx.doi.org/10.1103/PhysRevA.84.051602

Published 17 November 2011

PACS
  • 67.80.kb
    Supersolid phases on lattices
  • 05.30.Jp
    Boson systems (quantum statistical mechanics)
  • 05.30.Rt
    Quantum phase transitions
  • YEAR: 2011
PUBLICATION DATA
ISSN:
1935-4061 (online)
Publisher:
AIP is a member of CrossRef APS
Jonathan M. Fellows1 and Sam T. Carr2
1School of Physics, University of Birmingham, Birmingham B15 2TT, United Kingdom
2Institut für Theorie der Kondensierten Materie and DFG Center for Functional Nanostructures, Karlsruher Institut für Technologie, D-76128 Karlsruhe, Germany

We discuss a model of dipolar bosons trapped in a weakly coupled planar array of one-dimensional tubes. We consider the situation where the dipolar moments are aligned by an external field, and we find a rich phase diagram as a function of the angle of this field exhibiting quantum phase transitions between solid, superfluid, and supersolid phases. In the low energy limit, the model turns out to be identical to one describing quasi-one-dimensional superconductivity in condensed matter systems. This opens the possibility of using bosons as a quantum analog simulator of electronic systems, a scenario arising from the intricate relation between statistics and interactions in quasi-one-dimensional systems.
History: Received 23 May 2011; revised 18 August 2011; published 17 November 2011
Digital Object Identifier: http://dx.doi.org/10.1103/PhysRevA.84.051602
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