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Hyperbolic Bending of Vortex Lines with Finite Number and Length in Rotating Trapped Bose--Einstein Condensates |
| DU Guo-Dong;MA Yong-Li |
| Department of Physics, Fudan University, Shanghai 200433 |
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| Cite this article: |
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DU Guo-Dong, MA Yong-Li 2007 Chin. Phys. Lett. 24 31-34 |
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Abstract The minimal energy configurations of hyperbolic bending vortex lines in the rotating trapped Bose--Einstein condensates are investigated by using a variational ansatz and numerical simulation. The theoretical calculation of the energy of the vortex lines as a function of the rotation frequency gives self-consistently vortex number, curvature and configuration. The numerical results show that bending is more stable than straight vortex line along the z-axis, and the vortex configuration in the xy-plane has a little expansion by increasing z.
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03.75.Lm
32.80.Pj
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Published: 01 January 2007
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| PACS: |
03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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32.80.Pj
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