Analytic approximation for a lattice gas with many interactions
- 1 July 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 28 (1) , 300-306
- https://doi.org/10.1103/physrevb.28.300
Abstract
A relatively simple decoupling approximation is used to calculate the chemical potential for a lattice gas with arbitrarily complex two-body interactions. It represents a considerable improvement over mean-field theory. Comparison with Monte Carlo calculations on metal hydrides with many interactions gives better than 10% agreement for the critical concentration and temperature.Keywords
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