摘要
利用半经典量子理论,研究了玻色-爱因斯坦凝聚体处于非对称的约瑟夫森结的动力学行为.结果表明双势阱中不同势阱的基态能量差与其相互作用能量的比率χ=0时,凝聚体表现为约瑟夫森效应;当χ≠0时,凝聚体中既存在量子宏观隧穿效应,又存在量子宏观局域效应.
Based on the semiclassical quantum theory, we study the dynamical behaviors of Bose-Einstein condensate in an asymmetric Josephson junction. It is shown that the Josephson effect appears in the system when the ratio x of the difference of two ground state energies to the interaction energies is zero. When x≠0, the dynamical behavior of the system shows both the macroscopic quantum tunneling and the macroscopic quantum localization.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第2期547-550,共4页
Acta Physica Sinica
基金
教育部重点项目(批准号:204099)
湖南省教育厅一般项目(批准号:03C466和04C662)资助的课题.~~
关键词
玻色爱因斯坦凝聚
约瑟夫森结
动力学性质
Bose-Einstein condensates, Josephson junctions, dynamical properties
