Mapping the glassy dynamics of soft spheres onto hard-sphere behavior

Mapping the glassy dynamics of soft spheres onto hard-sphere behavior
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将软球体的玻璃动力学映射到硬球体行为

DOI:
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发表时间:
2011
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通讯作者:
A. Liu
A. Liu
中科院分区:
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文献类型:
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作者:
M. Schmiedeberg;T. Haxton;S. Nagel;A. Liu

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我们证明了具有纯排斥相互作用的软球系统的动力学可以通过引入使用Andersen-Weeks-Chandler近似确定的有效硬球直径来描述。我们发现,这个近似,已知描述液体的静态性质,也给出了一个很好的描述动态量,松弛时间,甚至在玻璃化转变附近。
We show that the dynamics of soft-sphere systems with purely repulsive interactions can be described by introducing an effective hard-sphere diameter determined using the Andersen-Weeks-Chandler approximation. We find that this approximation, known to describe static properties of liquids, also gives a good description of a dynamical quantity, the relaxation time, even in the vicinity of the glass transition.