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In this paper we present an alternative formulation of the well-known integral equation approximations designed to keep a consistent approach to the determination of thermodynamic properties in the case of density-dependent interactions. Obvious[...]texto impreso
Almarza, N. G. ; Lomba, Enrique ; Ruiz, Guiomar ; Fernández Tejero, Carlos | American Physical Society | 2001-03-05Evidence of a liquid-liquid equilibrium in simple fluids has recently been exposed for a density-dependent pair potential in the framework of a van der Waals theory. Here this double criticality is investigated by means of computer simulation, a[...]texto impreso
The fluid-solid equilibrium of a system of hard spheres with embedded classical Heisenberg spins is studied by means of computer simulation and various combinations of density functional theories with the spin-spin contributions treated at the l[...]texto impreso
García Almarza, Noé ; Lomba, Enrique ; Ruiz, G. ; Fernández Tejero, Carlos | American Physical Society | 2003-02In a recent paper [Phys. Rev. Lett. 86, 2038 (2001)] a simple fluid with a particular density-dependent pair potential was shown to exhibit, together with the vapor-liquid transition, a liquid-liquid phase separation and it was evidenced that, i[...]texto impreso
Lomba, Enrique ; López Martín, J. L. ; Cataldo, H. M. ; Fernández Tejero, Carlos | American Physical Society | 1994-06A recently proposed entropic criterion [P.V. Giaquinta and G. Guinta, Physica A 187, 145 (1992)] for the determination of phase transitions in simple fluids is applied to two-fluid models, a purely repulsive point Yukawa fluid, and a 6-12 Lennar[...]
