The definition of the thermodynamic entropy in statistical mechanics

被引：9
作者：
Swendsen, Robert H. [1 ]
机构：
[1] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2017年 / 467卷
关键词：
Entropy; Thermodynamics; Statistical mechanics; Irreversibility; Second law of thermodynamics; GIBBS PARADOX; DISTINGUISHABILITY; PROBABILITY;
D O I：
10.1016/j.physa.2016.10.032
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A definition of the thermodynamic entropy based on the time-dependent probability distribution of the macroscopic variables is developed. When a constraint in a composite system is released, the probability distribution for the new equilibrium values goes to a narrow peak. Defining the entropy by the logarithm of the probability distribution automatically makes it a maximum at the equilibrium values, so it satisfies the Second Law. It also satisfies the postulates of thermodynamics. Objections to this definition by Dieks and Peters are discussed and resolved. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：67 / 73
页数：7
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