Non-Abelian Topological Excitations in Spinor Condensates
ZHANG Yun-Bo1,2 , Harri Mäkelä2 , Kalle-Antti Suominen2
1 Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 03006
2 Department of Physics, University of Turku, FIN-20014 Turun Yliopisto, Finland
Non-Abelian Topological Excitations in Spinor Condensates
ZHANG Yun-Bo1,2 ;Harri Mäkelä2 ;Kalle-Antti Suominen2
1 Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 03006
2 Department of Physics, University of Turku, FIN-20014 Turun Yliopisto, Finland
关键词 ：
03.75.Mn ,
03.75.Lm ,
05.30.Jp
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.
Key words ：
03.75.Mn
03.75.Lm
05.30.Jp
出版日期: 2005-03-01
:
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)
引用本文:
ZHANG Yun-Bo;Harri MäkeläKalle-Antti Suominen. Non-Abelian Topological Excitations in Spinor Condensates[J]. 中国物理快报, 2005, 22(3): 536-538.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I3/536
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2005, Vol. 22 
