Chin. Phys. Lett.  2005, Vol. 22 Issue (3): 536-538    DOI:
Original Articles |
Non-Abelian Topological Excitations in Spinor Condensates
ZHANG Yun-Bo1,2;Harri Mäkelä2;Kalle-Antti Suominen2
1Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 03006 2Department of Physics, University of Turku, FIN-20014 Turun Yliopisto, Finland
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ZHANG Yun-Bo, Harri Mä, kelä et al  2005 Chin. Phys. Lett. 22 536-538
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Abstract We investigate the topological defects in atomic spin-1 and spin-2 Bose--Einstein condensates by applying the homotopy group theory. With this rigorous approach we clarify the previously controversial identification of symmetry groups and order parameter spaces for the spin-1 case, and show that the spin-2 case provides a rare example of a physical system with non-Abelian line defects, and the possibility to have winding numbers of 1/3 and its multiples.
Keywords: 03.75.Mn      03.75.Lm      05.30.Jp     
Published: 01 March 2005
PACS:  03.75.Mn (Multicomponent condensates; spinor condensates)  
  03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)  
  05.30.Jp (Boson systems)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I3/0536
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