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Solutions of the reference-hypernetted-chain equation with minimized free energy

TLDR
In this article, the authors used the Rosenfeld-Ashcroft procedure of modeling the bridge function in the reference hypernetted-chain integral equation with its hard-sphere values, and choose the sphere diameter so that the free energy of the system is minimized.
Abstract
We use the Rosenfeld-Ashcroft procedure of modeling the bridge function in the reference---hypernetted-chain integral equation with its hard-sphere values, and choose the sphere diameter so that the free energy of the system is minimized. The resulting integral equation is solved for both the long-range Coulomb potential and the short-range Lennard-Jones potential. The results are in excellent agreement with Monte Carlo data for the thermodynamics and structure of both systems. The method provides an entirely first-principles approach to the theory of the structure and thermodynamics of simple classical liquids.

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Journal ArticleDOI

An Integral Equation To Describe the Solvation of Polar Molecules in Liquid Water

TL;DR: In this paper, the authors developed and implemented a statistical mechanical integral equation theory to describe the hydration structure of complex molecules, which is an extension of the reference interaction site model (RISM) in three dimensions, yields the average density from the solvent interactions sites at all points around a molecular solute of arbitrary shape.
Journal ArticleDOI

Self‐consistent integral equations for fluid pair distribution functions: Another attempt

TL;DR: In this article, a new mixed integral equation for the pair distribution function of classical fluids is proposed, which interpolates continuously between the soft core mean spherical closure at short distances, and the hypernetted chain closure at large distances.
Journal ArticleDOI

A rapidly convergent method of solving the OZ equation

TL;DR: In this article, a new method is proposed for solving numerically the Ornstein-Zernike equation for systems with a spherically symmetrical pair-potential, based on expansion of the function Γ(r)=r[h(r) - c(r)] in suitable basis functions and on a combination of Newton-Raphson and direct iterations.
Journal ArticleDOI

Integral equation theory description of phase equilibria in classical fluids

C. Caccamo
- 01 Sep 1996 - 
TL;DR: In this article, the authors review the present status of applications of integral equation theories (IETs) for the radial distribution function g(r), to the determination of phase diagrams and stability conditions of simple and charged classical fluids.
Journal ArticleDOI

An equation of state for liquid iron and implications for the Earth's core

TL;DR: In this article, an equation of state for liquid iron based on published ultrasonic, thermal expansion, and enthalpy data at 1 bar and on pulse-heating and shock wave compression and sound speed data up to 10 Mbar was presented.