Non-Abelian Magnetic Monopole in a Bose-Einstein Condensate

Journal Article · Fri Feb 27 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.080403· OSTI ID:21180231

Pietilae, Ville ^[1]; Moettoenen, Mikko ^[1]

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1. Department of Applied Physics/COMP, Helsinki University of Technology, P.O. Box 5100, FI-02015 TKK (Finland)

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 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 crossover to vortex ground state is observed.

• OSTI ID: 21180231
• Journal Information: Physical Review Letters, Vol. 102, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.102.080403; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
GAUGE INVARIANCE
GROUND STATES
LASER RADIATION
LASERS
MAGNETIC FIELDS
MAGNETIC MONOPOLES
TOPOLOGY
WAVELENGTHS