| 简谐势阱中有限粒子数二维玻色气体性质的数值分析 |
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| 引用本文： | 周照群,苏国珍,陈丽璇.简谐势阱中有限粒子数二维玻色气体性质的数值分析[J].厦门大学学报(自然科学版),2001,40(4):862-867. |
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| 作者姓名： | 周照群 苏国珍 陈丽璇 |
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| 作者单位： | 厦门大学物理学系, |
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| 基金项目： | 福建省自然科学基金资助项目(A97010) |
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| 摘 要： | 应用数值计算方法对二维简谐势阱中有限粒子数的理想玻色气体的性质进行了数值分析，讨论了系统在产生BEC时的一些物理量，结果表明，在粒子数N为有限情况下，基态的粒子占有率随温度的变化规律是平滑的；系统的热容始是连续的；零点能的考虑与否并不影响系统的BEC特性，但对系统的逸度值有影响。
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| 关 键 词： | 玻色－爱因斯坦凝聚 临界温度 热容 数值分析 理想玻色气体 二维简谐势阱 有限粒子数 |
| 文章编号： | 0438-0479(2001)04-0862-06 |
| 修稿时间： | 2000年12月26 |
Numerical Analysis of Bose-Einstein Condensation with
Finite Number of Particles in a Two-Dimensional
Harmonic Oscillator Potential |
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| ZHOU Zhao qun,SU Guo zhen,CHEN Li xuan.Numerical Analysis of Bose-Einstein Condensation with
Finite Number of Particles in a Two-Dimensional
Harmonic Oscillator Potential[J].Journal of Xiamen University(Natural Science),2001,40(4):862-867. |
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| Authors: | ZHOU Zhao qun SU Guo zhen CHEN Li xuan |
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| Abstract: | The properties of Bose Einstein condensation with finite number of particles in a two dimensional harmonic oscillator potential are studied by using numerical analysis. In this way, it can be seen that the fraction N 0/N is changing gently with the function of T/T C and the heat capacity in all the temperature area is continuous. Considering the energy at ground state may effect the fugacity in this system, but it does not have any effect on the properties of the system. |
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| Keywords: | Bose Einstein condensation critical temperature heat capacity |
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