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arXiv · 0807.1433

Non-Abelian magnetic monopole in a Bose-Einstein condensate

Ville Pietilä·Mikko Möttönen
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Abstract

Recently, an effective non-Abelian magnetic field with a topology of a monopole was shown to emerge from the adiabatic motion of multilevel atoms in spatially varying laser fields [J. Ruseckas et al., Phys. Rev. Lett. 95, 010404 (2005)]. We study this monopole in a Bose-Einstein condensate (BEC) of degenerate dressed states and find that the topological charge of the pseudospin cancels the monopole charge resulting in a vanishing gauge invariant charge. As a function of the laser wavelength, different stationary states are classified in terms of their effect to the monopole part of the magnetic field and a cross-over to vortex ground state is observed.

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Ville Pietilä, Mikko Möttönen. 2009-03-01. Non-Abelian magnetic monopole in a Bose-Einstein condensate. https://doi.org/10.1103/physrevlett.102.080403

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