摘要翻译:
我们给出的结果说明了对$R^{-6}$弥散项使用显式求和项对Lennard-Jones流体和SPC/E水的界面性质的影响。对于Lennard-Jones流体,我们发现使用长程求和,即使有较短的交叉半径,也能得到与使用大截止半径模拟相一致的结果。对SPC/E水的模拟表明,远距离弥散力比库仑力次要。在这两种情况下,我们发现盒尺寸$l_{parallel}$与交叉半径$r_{rm c}^{mathbf k}$的比值在决定长程色散校正的大小方面起着重要的作用,尽管当库仑相互作用也存在时,它的影响是次要的。
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英文标题:
《Application of Ewald summations to long-range dispersion forces》
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作者:
Pieter J. in 't Veld, Ahmed E. Ismail, and Gary S. Grest
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Materials Science 材料科学
分类描述:Techniques, synthesis, characterization, structure. Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术,合成,表征,结构。结构相变,力学性质,声子。缺陷,吸附质,界面
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We present results illustrating the effects of using explicit summation terms for the $r^{-6}$ dispersion term on the interfacial properties of a Lennard-Jones fluid and SPC/E water. For the Lennard-Jones fluid, we find that the use of long-range summations, even with a short ``crossover radius,'' yields results that are consistent with simulations using large cutoff radii. Simulations of SPC/E water demonstrate that the long-range dispersion forces are of secondary importance to the Coulombic forces. In both cases, we find that the ratio of box size $L_{\parallel}$ to crossover radius $r_{\rm c}^{\mathbf k}$ plays an important role in determining the magnitude of the long-range dispersion correction, although its effect is secondary when Coulombic interactions are also present.
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PDF链接:
https://arxiv.org/pdf/704.0474


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