Density Anomaly in Core-Softened Lattice Gas
Aline Lopes Balladares, Marcia C. Barbosa
Abstract
A two dimensional lattice gas model with ''core-softened'' potential is investigated. Two liquid phases and density anomaly are found. The demixing phase transition between the two liquid phases end at a tricritical point that is also the terminus of a critical line. The density anomaly is related to this continuous line.
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