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Long-range density fluctuations in glass-forming liquids

机译:玻璃形成液中的远距离密度波动

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摘要

A theory of the long-range correlations (LRCs) of density fluctuations is presented for glass-forming liquids. The supercooled heterophase liquid (HPL) is considered as composed of solid-like and fluid-like species with many types of the short-range order (SRO). The random field Ginzburg-Landau (GL) equations are deduced for the HPL. The variety of the SRO originates the local random fields. It is shown that optimization of the free energy gives rise to the medium and LRCs of the random fields and order parameter. Conditions for observation of such correlations are deduced. Time dependent GL equations are used to establish the ultra-slow dynamics and annealing kinetics of the LRCs. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 41]
机译:提出了一种用于玻璃形成液体的密度波动的长期相关性(LRC)理论。过冷的异相液体(HPL)被认为是由具有许多短程有序(SRO)类型的类固体和类液体组成的。推导了HPL的随机场Ginzburg-Landau(GL)方程。 SRO的多样性源自本地随机字段。结果表明,自由能的优化产生了随机场和阶数参数的中值和LRC。推论出观察这种相关性的条件。时间相关的GL方程用于建立LRC的超慢动力学和退火动力学。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:41]

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