华东师范大学学报(自然科学版)
華東師範大學學報(自然科學版)
화동사범대학학보(자연과학판)
2001年
2期
46-51
,共6页
玻色—爱因斯坦凝聚%凝聚温度%膺势法
玻色—愛因斯坦凝聚%凝聚溫度%膺勢法
파색—애인사탄응취%응취온도%응세법
最近人们已经在实验中实现了弱相互作用玻色气体的玻色—爱因斯坦凝聚。相互作用玻色气体的凝聚温度是玻色—爱因斯坦凝聚问题中一个重要的热力学量。运用膺势方法和巨正则分布，作者对盒子中相互作用玻色气体的凝聚温度给予了详细考察。研究表明凝聚温度的移动为δTc/Tc=-2.9an1/3，此处a和n分别为两粒子的S波散射长度和粒子数密度。
最近人們已經在實驗中實現瞭弱相互作用玻色氣體的玻色—愛因斯坦凝聚。相互作用玻色氣體的凝聚溫度是玻色—愛因斯坦凝聚問題中一箇重要的熱力學量。運用膺勢方法和巨正則分佈，作者對盒子中相互作用玻色氣體的凝聚溫度給予瞭詳細攷察。研究錶明凝聚溫度的移動為δTc/Tc=-2.9an1/3，此處a和n分彆為兩粒子的S波散射長度和粒子數密度。
최근인문이경재실험중실현료약상호작용파색기체적파색—애인사탄응취。상호작용파색기체적응취온도시파색—애인사탄응취문제중일개중요적열역학량。운용응세방법화거정칙분포，작자대합자중상호작용파색기체적응취온도급여료상세고찰。연구표명응취온도적이동위δTc/Tc=-2.9an1/3，차처a화n분별위량입자적S파산사장도화입자수밀도。
The Bose-Einstein condensation (BEC) of weakly interacting Bose gases has been realized recently in experiment. The condensation temperature of a uniform interacting Bose gas is an important thermodynamic quantity fot the BEC. In this paper, the pseudopotential method and grand canonical ensemble are used to investigate the condensation temperature of the uniform interacting Bose gas. The results show that, due to the interaction between particles, the shift of the condensation temperature is δTc/Tc=-2.9an1/3, where a and n are the two-particle scattering length of S-wave and the particle number density, respectively.
