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The Interference Effect of a Bose–Einstein Condensate in a Ring-Shaped Trap |
| CAO Li-Juan1, 2,LIU Shu-Juan1**, LÜ Bao-Long1 |
1Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
2Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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CAO Li-Juan, LIU Shu-Juan**, LÜ et al 2012 Chin. Phys. Lett. 29 050305 |
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Abstract We have studied the interference effect of a Bose–Einstein condensate expanding in a ring-shaped trap. The dynamic process of the condensate is analyzed based on the Gross–Pitaevskii equation. Our numerical results show that a petal-like interference pattern is formed during expansion within the ring-shaped trap. The petal number depends on the evolution time, which can be well explained by the interference of two flows of the condensate.
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| Keywords:
03.75.Dg
03.75.Kk
05.30.Jp
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Received: 05 April 2012
Published: 30 April 2012
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| PACS: |
03.75.Dg
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(Atom and neutron interferometry)
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03.75.Kk
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(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
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05.30.Jp
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(Boson systems)
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