Critical-point and coexistence-curve properties of the Lennard-Jones fluid: A finite-size scaling study.
Critical-point and coexistence-curve properties of the Lennard-Jones fluid: A finite-size scaling study.
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Lennard-Jones 流体的临界点和共存曲线特性：有限尺寸尺度研究。
DOI：
10.1103/physreve.52.602
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
N. Wilding
中科院分区：
文献类型：
--
作者：
N. Wilding
在巨正则系综的Monte Carlo模拟被用来探索Lennard-Jones流体的汽液共存曲线和临界点性质。注意力集中在共存的密度和能量波动的联合分布。在临界点附近，这种分布进行了分析，使用混合场有限尺寸缩放技术辅助直方图重新加权方法。分析产生高度准确的估计的临界点参数，以及暴露的规模和性质的校正缩放。在亚临界共存区的密度分布是通过结合多正则模拟与直方图重加权技术。它表明，该程序允许一个有效的和准确的映射的共存曲线，甚至深内的两相区域。
Monte Carlo simulations within the grand canonical ensemble are used to explore the liquid-vapour coexistence curve and critical point properties of the Lennard-Jones fluid. Attention is focused on the joint distribution of density and energy fluctuations at coexistence. In the vicinity of the critical point, this distribution is analysed using mixed-field finite-size scaling techniques aided by histogram reweighting methods. The analysis yields highly accurate estimates of the critical point parameters, as well as exposing the size and character of corrections to scaling. In the sub-critical coexistence region the density distribution is obtained by combining multicanonical simulations with histogram reweighting techniques. It is demonstrated that this procedure permits an efficient and accurate mapping of the coexistence curve, even deep within the two phase region.