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Tunneling Dynamics Between Atomic and Molecular Bose-Einstein Condensates

Tunneling Dynamics Between Atomic and Molecular Bose-Einstein Condensates
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摘要 Tunneling dynamics of multi-atomic molecules between atomic and multi-atomic molecular Bose-Einstein condensates with Feshbach resonance is investigated.It is indicated that the tunneling in the two Bose-Einstein condensates depends on not only the inter-atomic-molecular nonlinear interactions and the initial number of atoms in these condensates,but also the tunneling coupling between the atomic condensate and the multi-atomic molecular condensate.It is discovered that besides oscillating tunneling current between the atomic condensate and the multi-atomic molecular condensate,the nonlinear multi-atomic molecular tunneling dynamics sustains a self-locked population imbalance:a macroscopic quantum self-trapping effect.The influence of de-coherence caused by non-condensate atoms on the tunneling dynamics is studied.It is shown that de-coherence suppresses the multi-atomic molecular tunneling.Moreover,the conception of the molecular Bose-Einstein condensate,which is different from the conventional single-atomic Bose-Einstein condensate,is specially emphasized in this paper.
机构地区 DepartmentofPhysics
出处 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第4期547-552,共6页 理论物理通讯(英文版)
基金 湖南省高校青年骨干教师培养基金,the Science Research Fund of Educational Bureau of Hunan Province of China
关键词 tunneling dynamics an atomic(a molecular)Bose-Einstein condensate Feshbach resonance DECOHERENCE 原子玻色-爱因斯坦凝聚 分子玻色-爱因斯坦凝聚 隧道效应 Feshbach共振 脱散 凝聚态物理学
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