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Mean-Field Dynamics of a Two-Mode Bose-Einstein Condensate Subject to Decoherence
- Source :
- Chinese Physics Letters. 27:070303
- Publication Year :
- 2010
- Publisher :
- IOP Publishing, 2010.
-
Abstract
- We discuss the dynamics of Bose-Einstein condensates in a double-well potential subject to decoherence (or particle loss). Starting from the full many-body dynamics described by the master equation, an effective Gross-Pitaevskii-like equation is derived in the mean-field approximation. By numerically solving the GP equation, we find that macroscopic quantum self-trapping disappears for strong decoherence, while generalized self-trapping occurs under weak decoherence. The fixed points have been calculated, and we find that an abrupt change from elliptic to an attractor and a repeller occurs, reflecting the metastable behavior of the system around these points.
Details
- ISSN :
- 17413540 and 0256307X
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Chinese Physics Letters
- Accession number :
- edsair.doi...........04f769354ffc81f2e496babbc13edf58