Abstract

The grand canonical ensemble techniques—both Monte Carlo and molecular dynamics—have become very popular in recent years, but no direct link between the number fluctuation results from these simulation methods and a Kirkwood–Buff theory has been established. In this article we look at Kirkwood–Buff integrals computed using thermodynamic averages derived from grand canonical ensemble molecular dynamics simulations and compare them to similar quantities derived from the dielectrically consistent reference interaction site model many-body theory. These calculations will be carried out for three different water models, SPC, SPC/E, and TIP3P.

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