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Critical behaviour of the lattice gas model in the Percus-Yevick approximation

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  • Parola, A.
  • Reatto, L.

Abstract

The solution of the Percus-Yevick (P.Y.) equation for the lattice gas, obtained by Levesque and Verlet, is studied in the critical region. The behaviour of the equation ofstate is similar to the one found for a fluid of sticky hard spheres in the P.Y. approximation: the critical indices have the classical value but the scaling function is non-universal, is strongly asymmetric in density with respect to the critical value and there is a spinodal curve only for the liquid phase. This suggests that these features are generally valid for the P.Y. approximation and are not specific for sticky hard spheres.

Suggested Citation

  • Parola, A. & Reatto, L., 1984. "Critical behaviour of the lattice gas model in the Percus-Yevick approximation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 125(1), pages 255-260.
    • Handle: RePEc:eee:phsmap:v:125:y:1984:i:1:p:255-260
    DOI: 10.1016/0378-4371(84)90013-X
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