Competition between vortex unbinding and tunneling in an optical lattice | Zendy

Miguel A. Cazalilla | Zendy; Anı́bal Iucci | Zendy; Thierry Giamarchi | Zendy

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Competition between vortex unbinding and tunneling in an optical lattice

Author(s) -

Miguel A. Cazalilla,

Anı́bal Iucci,

Thierry Giamarchi

Publication year - 2007

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.75.051603

Subject(s) - condensed matter physics , optical lattice , quantum tunnelling , superfluidity , physics , vortex , amplitude , deconfinement , lattice (music) , phase transition , coherence (philosophical gambling strategy) , quantum mechanics , acoustics , thermodynamics

We study a system of two-dimensional Bose gases trapped in minima of a deepone-dimensional optical lattice potential. Increasing the tunneling amplitudebetween adjacent gases drives a deconfinement transition to a phase wherecoherence is established between neighboring two-dimensional gases. We computethe signature of this transition in the interference pattern of the system aswell as in its rotational response, which provides a direct measurement of thesuperfluidity in the system.Comment: 4+ pages, 1 figur

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