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Perturbation approach to the determination of phase transitions in simple liquids.

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Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)

Abstract

In this work we present a hard-sphere based perturbative scheme applied to the determination of the binodal curves in simple liquids. The method relies on the Rasaiah/Stell-Mansoori/Canfield perturbation method using the hard-sphere fluid as the reference system. The structural information of the hard-sphere system needed in the theory is supplied by the Rational Function Approximation method introduced by S. B. Yuste and A. Santos (Phys. Rev. A, 43, (5418) 1991). The resulting scheme is parameter free and yields a rather good approximation, compared with simulation results, once applied to the hard-core Yukawa and the Lennard-Jones potentials.

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