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Fluid of penetrable spheres: Testing the universality of the bridge
functional Y. Rosenfeld, M. Schmidt, M. Watzlawek, and H. Löwen, Phys. Rev. E 62, 5006 (2000). Locate in [bare] [illustrated] list. Get [full paper] as pdf. Extract. Penetrable spheres have been the object of recent extensive investigations as a prototype for intermicellar interactions in a solvent, and as representing a class of bounded potentials allowing complete interpenetrability of the particles. Here we compare density-functional and simulation results for the pair-correlation functions in a bulk fluid of penetrable spheres, as a stringent test for the approximation of "universality" of the bridge functional. [more]  Read the [full paper] as pdf. |
Basic model fluids
Density functionals were constructed for hard spheres [5] [6], penetrable spheres that interact with a step-function pair potential [7] (see [14] for more discussion), the Asakura-Oosawa-Vrij model of colloid-polymer mixtures [11], the Widom-Rowlinson model [17], and non-additive hard sphere mixtures [53].[more]