title: Reentrant miscibility in fluids with spherical interactions.
abstract: We have obtained the closed-loop fluid-fluid immiscibility in the phase diagram of a binary mixture with interactions with spherical symmetry. That topology appears when a short-range attractive interaction is considered between unlike pair molecules. We present "exact" results obtained from Monte Carlo simulation on different ensembles and results from the application of a first-order perturbation theory.
authors.affiliation: Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: N G
authors.initials: NG
authors.lastname: Almarza
authors.forename: E
authors.initials: E
authors.lastname: Enciso
authors.forename: M F
authors.initials: MF
authors.lastname: García
authors.forename: M A
authors.initials: MA
authors.lastname: González
authors.forename: F J
authors.initials: FJ
authors.lastname: Bermejo