| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Topological Structure of Vortices in Multicomponent Bose-Einstein Condensates |
| XU Tao |
| College of Electric and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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XU Tao 2009 Chin. Phys. Lett. 26 096701 |
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Abstract The structure of the vortex in a two-component Bose-Einstein condensate is studied by the method of Dirac δ function. The vortex can be characterized by the Brouwer degree and Hopf index, i.e., β1η1, β2η2. The circulation of the vortex can be a fraction, which is different from the usual result for a one-component condensate. The kinetic helicity of vortices is calculated.
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| Keywords:
67.85.Fg
47.32.-y
03.65.Vf.
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Received: 23 March 2009
Published: 28 August 2009
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