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arXiv 1610.07910cond-mat.dis-nn
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一种眼镜的模型自由能

A model free energy for glasses

Henrich Frielinghaus

摘要:

我们开发了一个模型自由能的扩展,基本上包括没有循环的图形。从这个计算,我们得到的密度(或特定的体积)的温度依赖性,典型的时间尺度的$α$松弛,和热容量。由此,我们认为,玻璃化转变是由附近的一级相变。波动,原则上可观察到的散射,将支持调查结果,并将增加振幅接近相边界(而大小保持不变)。这个幅度与集群的大小有关,也在协同性论证中引入。小的参数有关的更正,从循环进行了讨论,我们也可能已经找到了一个参数的“玻色子峰”。然后,整个概念的基础上的平衡参数,抑制-我们认为-波动(高磁化率)加上高密度,导致集群规模的强劲增长。

英文摘要:

We develop a model free energy from an expansion that basically includes graphs without loops. From this calculation, we derive the temperature dependence of the density (or specific volume), the typical time scale of the $α$-relaxation, and the heat capacity. From this, we argue that the glass transition is dominated by the vicinity of a first order phase transition. The fluctuations, observable in principle as scattering, would support the findings and would increase in terms of amplitude close to the phase boundary (while the size stays constant). This amplitude is connected to the cluster size, also introduced in the cooperativity argument. Minor arguments about corrections from loops are discussed where we also might have found an argument for the "Boson Peak". The whole concept then bases on equilibrium arguments that are inhibited by -- to our view -- the fluctuations (high susceptibility) plus the high density that results in the strong growing of the cluster size.

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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