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Mean-field cage theory for the random close packed state of a metastable hard-sphere glass

Author

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  • Wang, Xian-Zhi

Abstract

In 2005, we developed a mean-field cage theory for the freezing of a stable hard-sphere fluid using the character of a stable hard-sphere fluid, some observations and the mean-configuration approximation [X.Z. Wang, J. Chem. Phys. 122 (2005) 044515]. It was found that near the freezing point, a thermal fluctuation of a cage causes the hard sphere in this cage to exchange positions with one of its nearest neighbors. In this paper, we extend the theory to the random close packed state of a metastable hard-sphere glass. It is found that near the random close packing point, a thermal fluctuation of a cage sets three of the hard spheres in this cage and its nearest cages into the local circulatory motion, resulting in indirect position exchanges among these three hard spheres. We obtain an analytical formula for the random close packing density. The predicted values are in good agreement with the experimental and simulation results for spatial dimensions d=2–7.

Suggested Citation

  • Wang, Xian-Zhi, 2012. "Mean-field cage theory for the random close packed state of a metastable hard-sphere glass," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(13), pages 3566-3573.
  • Handle: RePEc:eee:phsmap:v:391:y:2012:i:13:p:3566-3573
    DOI: 10.1016/j.physa.2012.02.023
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