| 最概然分布、微观状态数及其相关问题 |
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| 引用本文： | 王鑫,侯吉旋,赖玫玫,胡小燕,刘全慧.最概然分布、微观状态数及其相关问题[J].大学物理,2006,25(1):41-44,46. |
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| 作者姓名： | 王鑫 侯吉旋 赖玫玫 胡小燕 刘全慧 |
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| 作者单位： | 湖南大学,理论物理研究所和应用物理系,湖南,长沙,410082 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划;湖南大学校科研和教改项目 |
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| 摘 要： | 通过对一个简单模型的研究可知,最概然分布包含的微观状态数和全部可能微观状态数的比值在热力学极限下为零.当一个热力学体系处于平衡态时,最概然分布及其附近相对于实验可以达到的精度来说的极其狭窄的区域内的分布包括了体系几乎全部可能的微观状态数.
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| 关 键 词： | 统计力学 等概率原理 最概然分布 |
| 文章编号： | 1000-0712（2006）01-0041-04 |
| 收稿时间： | 2004-06-25 |
| 修稿时间： | 2004-06-252005-06-16 |
The most probable distribution,the number of microstates and related problems |
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| WANG Xin,HOU Ji-xuan,LAI Mei-mei,HU Xiao-yan,LIU Quan-hui.The most probable distribution,the number of microstates and related problems[J].College Physics,2006,25(1):41-44,46. |
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| Authors: | WANG Xin HOU Ji-xuan LAI Mei-mei HU Xiao-yan LIU Quan-hui |
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| Institution: | School of Theoretical Physics and Department of Applied Physics, Hunan University,Changsha 410082,China |
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| Abstract: | In thermodynamic limit the ratio of the number of states involved in the most probable distribution to all possible states accessible to the system is zero.The most probable distribution and its vicinal distributions include approximately all of the states accessible to the system,and by vicinal we mean very small in comparison with the experimental reachable accuracy. |
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| Keywords: | statistical mechanics equal a priori probabilities most probable distribution |
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