系统配分函数与子系配分函数关系探讨  

Study of the Relation between Partition Functions and Particle Partition Functions

作　　者：王赵武 雷建飞 李立本 Wang Zhaowu;Lei Jianfei;Li Liben(School of Physics and Engineering,Henan University of Science and Technology,Luoyang,471023,China)

机构地区：[1]河南科技大学物理工程学院,河南洛阳471023

出　　处：《洛阳师范学院学报》2020年第11期9-10,14,共3页Journal of Luoyang Normal University

基　　金：河南省高等学校重点科研项目(19A140008)。

摘　　要：在统计物理学中,配分函数是个非常重要的物理量,然而系统配分函数的计算非常复杂.对于近独立系,可以先求子系配分函数,然后利用体系配分函数和子系配分函数的关系求出系统的配分函数.然而大多教材都没有给出体系配分函数和子系配分函数关系的适用条件.本文通过比较利用系统配分函数的定义与利用系统配分函数子系配分函数关系,分别计算的全同不可分辨粒子构成的近独立系的系统配分函数的差异,明确了近独立系的体系配分函数和子系配分函数关系的适用条件.In statistical physics,partition function is a very important physical quantity,but its calculation is rather complex.For quasi-independent system,the particle partition function can be first computed,and then the partition function of the system can be obtained through the relation between the partition functions and the particle partition function.However,in many text books,the application conditions of the relation between the partition functions and the particle partition function are not explained explicitly.By comparing the difference between the partition function of quasi-independent systems composed of identical indistinguishable particles calculated by using the partition function relationship and partition function subsystem,and the definition of partition function,the applicable conditions of partition function and particle partition function relationship of quasi independent system are clarified.

关 键 词：配分函数 近独立系 经典极限条件 

分 类 号：O414[理学—理论物理]