大学物理 ›› 2006, Vol. 25 ›› Issue (1): 41-41.

• 著者文摘 • 上一篇    下一篇

最概然分布、微观状态数及其相关问题

王鑫 侯吉旋 赖玫玫 胡小燕 刘全慧   

  1. 湖南大学理论物理研究所和应用物理系,湖南长沙410082
  • 出版日期:2006-01-25 发布日期:2006-01-20

The most probable distribution, the number of microstates and related problems

  • Online:2006-01-25 Published:2006-01-20

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,最慨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。

关键词: 统计力学, 等概率原理, 最概然分布

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.

Key words: statistical mechanics, equal a priori probabilities, most probable distribution

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