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Continuum percolation of simple fluids: Energetic connectivity criteria

Luis A. Pugnaloni·Ileana F. Marquez·Fernando Vericat
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Abstract

During the last few years, a number of works in computer simulation have focused on the clustering and percolation properties of simple fluids based in an energetic connectivity criterion proposed long ago by T.L. Hill [J. Chem. Phys. 23, 617 (1955)]. This connectivity criterion appears to be the most appropriate in the study of gas-liquid phase transition. So far, integral equation theories have relayed on a velocity-averaged version of this criterion. We show, by using molecular dynamics simulations, that this average strongly overestimates percolation densities in the Lennard-Jones fluid making unreliable any prediction based on it. Additionally, we use a recently developed integral equation theory [Phys. Rev. E 61, R6067 (2000)] to show how this velocity-average can be overcome.

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Luis A. Pugnaloni, Ileana F. Marquez, Fernando Vericat. 2002-09-23. Continuum percolation of simple fluids: Energetic connectivity criteria. https://doi.org/10.1016/s0378-4371(02)01688-6

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