Enhanced approach to calculation of cluster integrals for lattice models of matter

Abstract

The study is devoted to enhancing the existing techniques of calculating Mayer's expansion cluster integrals for lattice models of matter. Two important optimizations are proposed: simplifying the calculation of the integrand at each integration point and reducing the number of such integration points due to eliminating physically identical configurations. Based on those optimizations, new data on high-order cluster integrals are obtained for a number of 2D and 3D lattice models.

11 pages, 3 figures, 9 tables

References in corpus (4)

• Virial expansion and condensation with a new generating function
• Gibbs free energy and Helmholtz free energy for a three-dimensional Ising-like model
• Virial expansions and augmented van der Waals approach: Application to Lennard-Jones-like Yukawa fluid
• Advances of Mayer's cluster approach in quantitative theoretical description of phase transitions for various lattice models of matter