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Switching and Self-trapping Dynamics of Dark Solitons in a Two-Component Bose--Einstein Condensate |
| LI Hong 1,2;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. 2007 Chin. Phys. Lett. 24 871-873 |
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Abstract Two coupled dark solitons are considered in a two-component Bose--Einstein
condensate, and their dynamics are investigated by the variational approach based the renormalized integrals of motion. The stationary states as physical solutions to the describing equations are obtained, and the dynamic mechanism is demonstrated by performing a coordinate of a classical particle moving in an effective potential field. The switching and self-trapping dynamics of the coupled dark vector solitons are discussed by the evolution of the atom population transferring ratio.
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| Keywords:
03.75.Lm
05.45.Yv
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Received: 28 December 2006
Published: 26 March 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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05.45.Yv
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(Solitons)
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