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The composition-independent virial coefficients of a $d$-dimensional binary mixture of (additive) hard hyperspheres following from a recent proposal for the equation of state of the mixture [Santos, A., Yuste, S. B., and L\'opez de Haro,…

Statistical Mechanics · Physics 2007-05-23 A. Santos , S. B. Yuste , M. López de Haro

Analytical expressions for radial distribution function (RDF) are of critical importance for various applications, such as development of the perturbation theories for equilibrium properties. Theoretically, RDF expressions for…

Statistical Mechanics · Physics 2023-10-20 Hongqin Liu

We discuss structural and thermodynamical properties of Baxter's adhesive hard sphere model within a class of closures which includes the Percus-Yevick (PY) one. The common feature of all these closures is to have a direct correlation…

Statistical Mechanics · Physics 2009-11-10 Domenico Gazzillo , Achille Giacometti

The simplest bounded potential is that of penetrable spheres, which takes a positive finite value $\epsilon$ if the two spheres are overlapped, being 0 otherwise. In this paper we derive the cavity function to second order in density and…

Statistical Mechanics · Physics 2015-06-29 Andres Santos , Alexandr Malijevsky

We apply connectedness percolation theory to fractal liquids of hard particles, and make use of a Percus-Yevick liquid state theory combined with a geometric connectivity criterion. We find that in fractal dimensions the percolation…

Statistical Mechanics · Physics 2021-11-24 René de Bruijn , Paul van der Schoot

By Wertheim-method the exact solution of the Percus-Yevick integral equation for a system of particles with the repulsive step potential interacting (collapsing hard spheres) is obtained. On the basis of this solution the state equation for…

Statistical Mechanics · Physics 2007-05-23 I. Klebanov , P. Gritsay , N. Ginchitskii

The Percus-Yevick theory for monodisperse hard spheres gives very good results for the pressure and structure factor of the system in a whole range of densities that lie within the liquid phase. However, the equation seems to lead to a very…

Statistical Mechanics · Physics 2019-02-01 Eytan Katzav , Ruslan Berdichevsky , Moshe Schwartz

We consider the effect of intermolecular interactions on the optimal size-distribution of $N$ hard spheres that occupy a fixed total volume. When we minimize the free-energy of this system, within the Percus-Yevick approximation, we find…

Soft Condensed Matter · Physics 2009-10-31 Junfang Zhang , Ronald Blaak , Emmanuel Trizac , Jose A. Cuesta , Daan Frenkel

The fourth virial coefficient of additive hard-sphere mixtures, as predicted by the Percus-Yevick (PY) and hypernetted-chain (HNC) theories, is derived via the compressibility, virial, and chemical-potential routes, the outcomes being…

Statistical Mechanics · Physics 2014-07-07 Elena Beltrán-Heredia , Andrés Santos

A three-dimensional finite-difference solver has been developed and implemented for Boussinesq convection in a spherical shell. The solver transforms any complex curvilinear domain into an equivalent Cartesian domain using Jacobi…

Computational Physics · Physics 2023-05-30 Souvik Naskar , Karu Chongsiripinyo , Anikesh Pal , Akshay Jananan

We construct a non-perturbative fully analytical approximation for the thermodynamics and the structure of nonadditive hard-sphere fluid mixtures. The method essentially lies in a heuristic extension of the Percus-Yevick solution for…

Soft Condensed Matter · Physics 2011-10-14 Riccardo Fantoni , Andrés Santos

A simple recipe to derive the compressibility factor of a multicomponent mixture of d-dimensional additive hard spheres in terms of that of the one-component system is proposed. The recipe is based (i) on an exact condition that has to be…

Statistical Mechanics · Physics 2019-05-23 A. Santos , S. B. Yuste , M. Lopez de Haro

As is well known, approximate integral equations for liquids, such as the hypernetted chain (HNC) and Percus--Yevick (PY) theories, are in general thermodynamically inconsistent in the sense that the macroscopic properties obtained from the…

Statistical Mechanics · Physics 2010-04-15 Andrés Santos , Gema Manzano

A method to obtain (approximate) analytical expressions for the radial distribution functions in a multicomponent mixture of additive hard spheres that was recently introduced is used to obtain the direct correlation functions and bridge…

Statistical Mechanics · Physics 2008-09-15 S. B. Yuste , A. Santos , M. López de Haro

The chemical potential of a hard-sphere fluid can be expressed in terms of the contact value of the radial distribution function of a solute particle with a diameter varying from zero to that of the solvent particles. Exploiting the…

Statistical Mechanics · Physics 2012-09-24 Andrés Santos

We present a steady analytical solution of the incompressible Navier-Stokes equation for arbitrary viscosity in an arbitrary dimension $d$ of space. It represents a $d-1$ dimensional vortex "sheet" with an asymmetric profile of vorticity as…

Fluid Dynamics · Physics 2021-03-31 Alexander Migdal

We present new results for the virial coefficients B_k with k <= 10 for hard spheres in dimensions D=2,...,8.

Statistical Mechanics · Physics 2016-10-06 Nathan Clisby , Barry M. McCoy

The phase behavior of the Baxter adhesive hard sphere fluid has been determined using specialized Monte Carlo simulations. We give a detailed account of the techniques used and present data for the fluid-fluid coexistence curve as well as…

Soft Condensed Matter · Physics 2009-11-10 M. A. Miller , D. Frenkel

A recent paper [I. Klebanov et al. \emph{Mod. Phys. Lett. B} \textbf{22} (2008) 3153; arXiv:0712.0433] claims that the exact solution of the Percus-Yevick (PY) integral equation for a system of hard spheres plus a step potential is…

Soft Condensed Matter · Physics 2009-11-09 Andrés Santos

A correlation between maxima in virial coefficients (Bn), and "kissing" numbers for hard hyper-spheres up to dimension D=5, indicates a virial equation and close-packing relationship. Known virial coefficients up to B7, both for hard…

Statistical Mechanics · Physics 2011-05-23 Leslie V. Woodcock