2,015 research outputs found
Complex Phase Behavior of The System of Particles with Smooth Potential with Repulsive Shoulder and Attractive Well
We report a detailed simulation study of the phase behavior of core softened
system with attractive well. Different repulsive shoulder widthes and
attractive well depthes are considered which allows to monitor the influence of
repulsive and attractive forces on the phase diagram of the system.
Thermodynamic anomalies in the systems are also studied. It is shown that the
diffusion anomaly is stabilized by small attraction.Comment: 11 pages, 13 figure
Generalized van der Waals theory of liquid-liquid phase transitions
In the framework of the thermodynamic perturbation theory for fluids we study
how the phase diagram of an isotropic repulsive soft-core attractive potential,
where a liquid-liquid phase transition exists in addition to the standard
gas-liquid phase transition, changes by varying the parameters of the
potential. We show that existence of the liquid-liquid transition is determined
by the interplay of the parameters of the potential and the structure of a
reference liquid.Comment: 5 pages, 6 figure
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