外势场中玻色——爱因斯坦凝聚性质的研究  

Bose-Einstein Condensation in External Potential

作　　者：李秀平[1] 刘文森[1] 张国锋[1] 

机构地区：[1]山西大学物理系,山西太原030006

出　　处：《量子光学学报》2003年第1期27-31,共5页Journal of Quantum Optics

基　　金：山西省自然科学基金(20001004)

摘　　要：(1)简要介绍BEC概念的一种含义及BEC形成的条件;(2)着重对外势场中的BEC作了研究,得出了低维情况下产生BEC的条件:当U(x)～xη时,一维情况发生BEC满足η<2;二维情况发生BEC满足η>0。In this paper, (1) a kind of meaning of the BEC concept and the condition of the BEC formation of synopsis are introduced.(2) we demonstrate the possibility of BEC of an ideal Bose gas confined by one-and two-dimensional power-law traps. One-dimensional systems display BEC in traps that are more confined than parabolic: U(x)～xη, η<2, Two-dimensional systems display BEC for any finite Value of η.

关 键 词：玻色——爱因斯坦凝聚 外势场 BEC 理想玻色气体 幂函数势阱 量子系统 量子态 性质 碱金属原子 

分 类 号：O413[理学—理论物理] O562[理学—物理]