Ground-state Dirac monopole

E. Ruokokoski, V. Pietilä, and M. Möttönen
Phys. Rev. A 84, 063627 – Published 21 December 2011
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Abstract

We show theoretically that a monopole defect, analogous to the Dirac magnetic monopole, may exist as the ground state of a dilute spin-1 Bose-Einstein condensate. The ground-state monopole is not attached to a single semi-infinite Dirac string but forms a point where the circulation of a single vortex line is reversed. Furthermore, the three-dimensional dynamics of this monopole defect is studied after the magnetic field pinning the monopole is removed and the emergence of antimonopoles is observed. Our scheme is realizable with the current experimental facilities.

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  • Received 4 October 2011

DOI:https://doi.org/10.1103/PhysRevA.84.063627

©2011 American Physical Society

Authors & Affiliations

E. Ruokokoski1, V. Pietilä2, and M. Möttönen1,3

  • 1Department of Applied Physics/COMP, Aalto University, P.O. Box 14100, FI-00076 AALTO, Finland
  • 2Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA
  • 3Low Temperature Laboratory, Aalto University, P.O. Box 13500, FI-00076 AALTO, Finland

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Issue

Vol. 84, Iss. 6 — December 2011

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