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Josephson Dynamics of a Bose--Einstein Condensate Trapped in a Double-Well Potential |
| YANG Hong-Wei1;ZUO Wei 1,2 |
| 1Institute of Modern Physics, Chinese Academy of Sciences, PO Box 31, Lanzhou 7300002Graduate School, Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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YANG Hong-Wei, ZUO Wei 2007 Chin. Phys. Lett. 24 620-623 |
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Abstract The Josephson equations for a Bose--Einstein Condensate gas trapped in a
double-well potential are derived with the two-mode approximation by the
Gross--Pitaevskii equation. The dynamical characteristics of the equations are obtained by the numerical phase diagrams. The nonlinear self-trapping effect appeared in the phase diagrams are emphatically discussed, and the condition EcN>4EJ is presented.
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| Keywords:
03.75.Lm
03.65.Ge
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Received: 14 November 2006
Published: 08 February 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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03.65.Ge
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(Solutions of wave equations: bound states)
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