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arXiv · cond-mat/0612232

Liquid polymorphism and density anomaly in a three-dimensional associating lattice gas

Mauricio Girardi·Aline L. Balladares·Vera B. Henriques·Marcia C. Barbosa
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Abstract

We investigate the phase diagram of a three-dimensional associating gas $(ALG)$ model. This model combines orientational ice-like interactions and ``van der Waals'' that might be repulsive, representing, in this case, a penalty for distortion of hydrogen bonds. These interactions can be interpreted as two competing distances making the connection between this model and continuous isotropic soft-core potentials. We present Monte Carlo studies of the $ALG$ model showing the presence of two liquid phase, two critical points and A density anomaly.

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Mauricio Girardi, Aline L. Balladares, Vera B. Henriques, Marcia C. Barbosa. 2006-12-09. Liquid polymorphism and density anomaly in a three-dimensional associating lattice gas. https://doi.org/10.1063/1.2434974

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