有限粒子数效应对任意维量子气体热力学性质的影响  

The Effects of a Finite Number of Particles on Two Trapped Quantum Gases

作　　者：陈礼炜[1] 

机构地区：[1]三明学院机电工程学院,福建三明365004

出　　处：《三明学院学报》2013年第4期1-6,共6页Journal of Sanming University

基　　金：三明学院科研基金项目(B201202/G)

摘　　要：对于束缚在任意维谐振势中的理想玻色气体和费米气体,有限粒子效应对其热力学性质将会产生影响。估计出在不同的情况下,有关于各个热力学量的相对修正。并对两种受限量子气体所得结果进行比较,得出结论:有限粒子数效应对于凝聚状态下的玻色气体(玻色气体在系统中发生玻色爱因斯坦凝聚)的影响要比费米气体和正常的玻色气体(没有发生玻色爱因斯坦凝聚的玻色气体)显著得多。The effects of a finite number of particles on the thermodynamic properties of ideal Bose and Fermi gases trapped in any dimensional harmonic potential axe investigated. The orders of relative corrections to the thermodynamic quantifies due to the finite number of particles are estimated in different situations. The results obtained from the two trapped quantum gases are compared, and consequently, it is shown that the f＇mite-particle-number effects for the condensed Bose gas （a Bose gas with BEC occurring in the system） are much more significant than those for the Fermi gas and normal Bose gas （a Bose gas without BEC）.

关 键 词：量子气体 有限粒子数 谐振势 热力学性质 

分 类 号：O413.1[理学—理论物理]