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Dark Soliton of a Growing Bose--Einstein Condensate in an External Trap |
| LI Hong1,2, WANG D. N.3 |
| 1Hubei Key Laboratory of Bioanalytical Technique, Hubei Normal University, Huangshi 4350022School of Mechanical and Electronic Engineering, Huangshi Institute of Technology, Huangshi 4350033Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong |
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| Cite this article: |
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LI Hong, WANG D. N. 2008 Chin. Phys. Lett. 25 3864-3866 |
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Abstract The dynamics of dark soliton in a growing Bose--Einstein condensate with an external magnetic trap are investigated by the variational approach based on the renormalized integrals of motion. The stationary states as physical solutions to the describing equation are obtained, and the evolution of the dark soliton is numerically simulated. The numerical results confirm the theoretical analysis and show that the dynamics depend strictly on the initial condition, the gain coefficient and the external potential.
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| Keywords:
03.75.-b
03.75.Kk
05.45.Yv
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Received: 05 May 2008
Published: 25 October 2008
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| PACS: |
03.75.-b
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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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05.45.Yv
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(Solitons)
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