2015•arXiv (Cornell University)Open access

Approximate direct correlation function for multi-Yukawa hard-core systems

E. E. Tareyeva, V. N. Ryzhov

Abstract

Simple closed analytical expression for approximate direct correlation function (DCF) for multi--Yukawa hard--core system of particles is presented. The obtained DCF is a solution of the Ornstein--Zernike equation with multi--Yukawa closure valid in the linear approximation in the potential. This approximation includes linear corrections to the hard-- sphere DCF inside the core radius.

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Key concepts: Yukawa potential, Ornstein–Zernike equation, Closure (psychology), RADIUS, Core (optical fiber), Function (biology), Hard core, Correlation function (quantum field theory)