Abstract
We investigate the spatial distribution of the gauge field for neutral, spin-carrying atoms generated from the spatially inhomogeneous magnetic field near a current loop. When a zero-field ring is formed in the magnetic field, the gauge field around the ring exhibits a spatial structure resembling that of an effective dipole ring. We show that the emergence of the dipole-like spatial structure of the gauge field can be viewed as being the result of a merging of two effective monopoles of opposite charges that correspond to zero-field points in the magnetic field. Finally, we propose an experimental scheme using three concentric current loops to explore the gauge field effects on spinor Bose-Einstein condensates in a versatile manner.
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