Rotational Fluxons of Bose-Einstein Condensates in Coplanar Double-Ring Traps
arXiv:0812.3029 · doi:10.1103/PhysRevA.80.011602
Abstract
Rotational analogs to magnetic fluxons in conventional Josephson junctions are predicted to emerge in the ground state of rotating tunnel-coupled annular Bose-Einstein condensates (BECs). Such topological condensate-phase structures can be manipulated by external potentials. We determine conditions for observing macroscopic quantum tunneling of a fluxon. Rotational fluxons in double-ring BECs can be created, manipulated, and controlled by external potential in different ways than possible in the solid state system, thus rendering them a promising new candidate system for studying and utilizing quantum properties of collective many-particle degrees of freedom.
arXiv comment4 pages, 3 figures. Text and references changed in response to editor's and reviewers' comments. Error in Eq. (1) corrected
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