Cavity size distribution in lattice liquids.

Abstract

We investigate a lattice model for liquids. The average cavity size dependence on the molecular size is analyzed. Our results confirm the idea that larger molecules lead to greater average cavity size. This feature of liquids has been recently interpreted as the reason for solubility differences between water and other liquids. We also study the percolation problem for empty sites. Critical densities and the critical exponents of correlation length and average cavity size are estimated. (c) 1995 The American Physical Society