中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3379-3383.doi: 10.1088/1674-1056/18/8/043

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Topological aspects in a two-component Bose condensed system in neutron star

任继荣, 郭恒   

  1. Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2008-10-14 修回日期:2009-03-16 出版日期:2009-08-20 发布日期:2009-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10275030) and Cuiying Project of Lanzhou University (Grant No 225000-582404).

Topological aspects in a two-component Bose condensed system in neutron star

Ren Ji-Rong(任继荣) and Guo Heng(郭恒)†   

  1. Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China
  • Received:2008-10-14 Revised:2009-03-16 Online:2009-08-20 Published:2009-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10275030) and Cuiying Project of Lanzhou University (Grant No 225000-582404).

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摘要： By making use of Duan--Ge's decomposition theory of gauge potential and the topological current theory proposed by Prof. Duan Yi-Shi, we study a two-component superfluid Bose condensed system, which is supposed to be realized in the interior of neutron stars in the form of the coexistence of a neutron superfluid and a protonic superconductor. We propose that this system possesses vortex lines. The topological charges of the vortex lines are characterized by the Hopf indices and the Brower degrees of φ-mapping.

Abstract: By making use of Duan--Ge's decomposition theory of gauge potential and the topological current theory proposed by Prof. Duan Yi-Shi, we study a two-component superfluid Bose condensed system, which is supposed to be realized in the interior of neutron stars in the form of the coexistence of a neutron superfluid and a protonic superconductor. We propose that this system possesses vortex lines. The topological charges of the vortex lines are characterized by the Hopf indices and the Brower degrees of $\phi$-mapping.

Key words: neutron stars, topological defects, two-component Bose condensed system

中图分类号:  (Neutron stars)

  • 97.60.Jd