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Fernández Tejero, Carlos ; Daanoun, A. ; Lekkerkerker, H. N. W. ; Baus, M. | American Physical Society | 1995-01A variational approach based on the Gibbs-Bogoliubov inequality is used in order to evaluate the free energy of simple fuids described by a double-Yukawa pair potential. A hard-sphere reference fuid is used to describe the fuid phases, and an Ei[...]texto impreso
The compressibility equation of a fluid with an effective, state-dependent, pair-potential is derived. It is shown that the thermodynamic states for which the infinite wavelength limit of the static structure factor diverges are not consistent w[...]texto impreso
Fernández Tejero, Carlos ; Daanoun, A. ; Lekkerkerker, H. N. W. ; Baus, M. | American Physical Society | 1994-08-01It is shown that strongly reducing the range of the attractions of a simple fluid will transform its phase diagram from the usual type, with a fluid-fluid critical point and a fluid-fluid-solid triple point, into its fluid-solid mirror image, wi[...]texto impreso
The Wilson-Frenkel growth law of colloidal crystals formed in charge-stabilized dispersions of latex spheres is investigated theoretically on the basis of variational free-energy estimates. We find, in agreement with recent experimental results,[...]texto impreso
In analogy with the well-known theory for fluids, a van der Waals theory for solids is proposed. It is shown that, in agreement with recent predictions, the competition between the van der Waals loop of the fluid and the van der Waals loop of th[...]
