Danani, Andrea and Ferrando, Riccardo and Scalas, Enrico and Torri, Massimo (1996) Multi-site correlation functions in two-dimensional lattice gases. Physica A: Statistical Mechanics and its Applications, 223 (1). pp. 149-166. ISSN 0378-4371
Full text not available from this repository.Abstract
The three- and four-site-correlation functions in a two-dimensional Ising-Peierls square lattice gas are computed by means of the cluster variation method (CVM) introduced by Kikuchi. The non-linear CVM equations are numerically solved and the values of several multi-site correlation functions are compared with the results of Monte Carlo simulations at four different coverages (θ = 18, 14, 12, 34) as functions of the lateral coupling βJ. The results obtained by CVM are accurate within few percent at all coverages and lateral couplings taken into account. Thus the CVM results are used as a basis for a discussion of the validity of the Kirkwood superposition approximation in lattice gases.
| Item Type: | Scientific journal article, Newspaper article or Magazine article |
|---|---|
| Subjects: | Physical sciences > Physics > Mathematical & theoretical physics |
| Department/unit: | Dipartimento tecnologie innovative > Istituto di ingegneria meccanica e tecnologia dei materiali |
| Depositing User: | Andrea Danani |
| Date Deposited: | 06 Mar 2015 06:41 |
| Last Modified: | 08 Jul 2016 11:26 |
| URI: | http://repository.supsi.ch/id/eprint/6234 |
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