Continuous demixing at liquid-vapor coexistence in a symmetrical binary fluid mixture

Details Continuous demixing at liquid-vapor coexistence in a symmetrical binary fluid mixture Continuous demixing at liquid-vapor coexistence in a symmetrical binary fluid mixture

2003-01-14

arxiv.org/abs/cond-mat/0301216v1

Physics

Condensed Matter

Statistical Mechanics

7 pages, 6 figures

Scientific paper

10.1103/PhysRevE.67.052503

We report a Monte Carlo finite-size scaling study of the demixing transition of a symmetrical Lennard-Jones binary fluid mixture. For equal concentration of species, and for a choice of the unlike-to-like interaction ratio delta=0.7, this transition is found to be continuous at liquid-vapor coexistence. The associated critical end point exhibits Ising-like universality. These findings confirm those of earlier smaller scale simulation studies of the same model, but contradict the findings of recent integral equation and hierarchical reference theory investigations.

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