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The non-Abelian bosonic quantum ring

  • Cold Matter and Quantum Gases
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Abstract.

We investigate the dynamics of a spinor Bose-Einstein condensate which is governed by an optically induced non-Abelian gauge potential. Using a ring shaped trap to confine the atoms and a hydrodynamic ansatz, nonlinear Josephson type equations are found to describe the system. The degenerate eigenstates which show rotation are solved exactly. We consider a homogenous filled ring and observe population dynamics between the two quasi-spin components but also space dependent Josephson oscillations. Stable mass currents can be observed which are induced by the constant non-Abelian effective magnetic field in the limit of weak interactions. For strong interactions the appearance of two-component dark soliton-like objects are observed.

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Authors and Affiliations

  1. SUPA, Department of Physics, Heriot-Watt University, Edinburgh, EH14 4AS, UK

    M. Merkl & P. Öhberg

  2. Institute of Theoretical Physics and Astronomy, Vilnius University, A. Gostauto 12, 01108, Vilnius, Lithuania

    G. Juzeliūnas

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  1. M. Merkl
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  2. G. Juzeliūnas
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Correspondence to M. Merkl.

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Merkl, M., Juzeliūnas, G. & Öhberg, P. The non-Abelian bosonic quantum ring. Eur. Phys. J. D 59, 257–267 (2010). https://doi.org/10.1140/epjd/e2010-00134-4

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  • DOI: https://doi.org/10.1140/epjd/e2010-00134-4

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