Microcanonical entropy inflection points: Key to systematic understanding of transitions in finite systems
Microcanonical entropy inflection points: Key to systematic understanding of transitions in finite systems
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DOI：
10.1103/physreve.84.011127
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发表时间：
2011-07-18
影响因子：
2.4
通讯作者：
Bachmann, Michael
中科院分区：
文献类型：
--
作者：
Schnabel, Stefan;Seaton, Daniel T.;Bachmann, Michael
介绍了有限系统相变类似物的系统分类方法。这种完全通用的分析，适用于任何物理系统，并向热力学极限延伸，是基于微规范熵及其能量导数，即逆热温度。这一数量的拐点标志着合作活动，因此可以作为过渡的不同指标。我们通过应用于长期存在的弹性、柔性均聚物的液固转变问题，证明了这种方法的力量。
We introduce a systematic classification method for the analogs of phase transitions in finite systems. This completely general analysis, which is applicable to any physical system and extends toward the thermodynamic limit, is based on the microcanonical entropy and its energetic derivative, the inverse caloric temperature. Inflection points of this quantity signal cooperative activity and thus serve as distinct indicators of transitions. We demonstrate the power of this method through application to the long-standing problem of liquid-solid transitions in elastic, flexible homopolymers.