The non-Abelian bosonic quantum ring |
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Authors: | M?Merkl G?Juzeliūnas P??hberg |
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Institution: | 1.SUPA, Department of Physics,Heriot-Watt University,Edinburgh,UK;2.Institute of Theoretical Physics and Astronomy,Vilnius University,Vilnius,Lithuania |
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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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