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arXiv 1708.04054physics.chem-phcond-mat.stat-mech
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通信:双结构热力学统一了水异常的所有场景

Communication: Two-structure thermodynamics unifying all scenarios for water anomalies

Michal Duška

摘要:

水在超冷区的反常行为(即大气压下密度的降低和响应函数的急剧增加)主要与液-液临界状态的存在或重新进入汽-液旋节线进入正压有关。尽管不同的起源,这两种情况下引入分歧的响应函数。我们在通信中阐明,临界性是水异常的背后,水具有正常的汽-液旋节线,并且由于临界点的存在而导致弯曲的密度面,因此预测了重新进入的特征。我们可以证明这一点,通过新的两个结构的状态方程的临界性导致的两个状态和背景状态的非理想混合被模拟的状态方程,这是部署用于预测的汽液Spinodal,而制定的再入方案。

英文摘要:

Anomalous behavior of water in superooled region (namely decrease of density and sharp increase of response functions at atmospheric pressure) are manly associated with either existence of liquid-liquid criticality or re-entering vapor-liquid spinodal into positive pressure. Despite different origin both scenarios introduce divergence of the response functions. We articulate in the communication that the criticality is behind water anomalies, water has normal vapor-liquid spinodal and that the re-entering feature was predicted because of curved density surface as a consequence of existence of critical point. We can proof this by new two structure equation of state with criticality resulting from non-ideal mixing of two states and a background state being modeled by exactly the same equation of state which was deployed for predicting of vapor-liquid spinodal while formulating the re-entering scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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