title: Equation of state of nonadditive d-dimensional hard-sphere mixtures.
abstract: An equation of state for a multicomponent mixture of nonadditive hard spheres in d dimensions is proposed. It yields a rather simple density dependence and constitutes a natural extension of the equation of state for additive hard spheres proposed by us [A. Santos, S. B. Yuste, and M. Lopez de Haro, Mol. Phys. 96, 1 (1999)]. The proposal relies on the known exact second and third virial coefficients and requires as input the compressibility factor of the one-component system. A comparison is carried out both with another recent theoretical proposal based on a similar philosophy and with the available exact results and simulation data in d=1, 2, and 3. Good general agreement with the reported values of the virial coefficients and of the compressibility factor of binary mixtures is observed, especially for high asymmetries and/or positive nonadditivities.
authors.affiliation: Departamento de Física, Universidad de Extremadura, E-06071 Badajoz, Spain. andres@unex.es
authors.forename: A
authors.initials: A
authors.lastname: Santos
authors.forename: M
authors.initials: M
authors.lastname: López de Haro
authors.forename: S B
authors.initials: SB
authors.lastname: Yuste