Configurational entropy of hard spheres

被引：54
|
作者：
Angelani, Luca
Foffi, Giuseppe
机构：
[1] Univ Roma La Sapienza, CNR, INFM, Res Ctr,SMC, I-00185 Rome, Italy
[2] Ecole Polytech Fed Lausanne, Inst Theoret Phys, IRRMA, Inst Romand Rech Numer Phys Mat, CH-1015 Lausanne, Switzerland
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 25期
关键词：
D O I：
10.1088/0953-8984/19/25/256207
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We numerically calculate the configurational entropy S-conf of a binary mixture of hard spheres, by using a perturbed Hamiltonian method trapping the system inside a given state, which requires fewer assumptions than the previous methods (Speedy 1998 Mol. Phys. 95 169). We find that Sconf is a decreasing function of the packing fraction. and extrapolates to zero at the Kauzmann packing fraction phi K similar or equal to 0.62, suggesting the possibility of an ideal glass transition for the hard-sphere system. Finally, the Adam-Gibbs relation is found to hold.
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页数：9
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