简谐势阱中弱相互作用玻色气体的临界温度及基态粒子占据率  

Critical Temperature and Ground State Fraction of a Weakly Interacting Bose Gas Trapped in a Harmonic Potential

作　　者：熊辉[1] 苏国珍[1] 陈丽璇[1] 

机构地区：[1]厦门大学物理学系,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2002年第2期177-181,共5页Journal of Xiamen University：Natural Science

摘　　要：应用局域密度近似法 (LDA)对简谐势阱约束下的非理想玻色气体发生玻色 爱因斯坦凝聚 (BEC)时的临界温度作出计算 ,进而讨论了弱相互作用对临界温度及基态粒子占据率的影响 .The critical temperature for the Bose-Einstein Condensation of an imperfect Bose gas trapped in a harmonic potential is calculated by using the local density approximation (LDA). The effects of weak interaction on the critical temperature and ground-state fraction of particles are discussed. The investigation will be helpful for the further understanding of the properties of BEC, which is called as a new kind of state of matter.

关 键 词：局域密度近似法 玻色气体 临界温度 简谐势阱 弱相互作用 基态粒子占据率 量子气体 玻色-爱因斯坦凝聚 

分 类 号：O414.2[理学—理论物理] O562.2[理学—物理]