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High-dimensional lattice gases

J R Heringa-+, H W J Blöte-+,++ and E Luijten§

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We investigate the critical behaviour of hard-core lattice gases in four, five and six dimensions by means of Monte Carlo simulations. In order to suppress critical slowing down, we use a geometrical cluster Monte Carlo algorithm. In particular, nearest-neighbour-exclusion lattice gases on simple hypercubic lattices are investigated. These models undergo Ising-like ordering transitions where the majority of the lattice-gas particles settle on one of two sublattices. A finite-size-scaling analysis of the simulation data confirms that these lattice gases display classical critical behaviour. The results agree with the renormalization predictions at and above the upper critical dimensionality. In particular, the predicted value of the Binder cumulant is confirmed.


PACS

64.60.F- Equilibrium properties near critical points, critical exponents

64.60.A- Specific approaches applied to studies of phase transitions

MSC

82B27 Critical phenomena

82B80 Numerical methods (Monte Carlo, series resummation, etc.) (See also 65-XX, 81T80)

82B26 Phase transitions (general)

82B28 Renormalization group methods (See also 81T17)

Subjects

Condensed matter: structural, mechanical & thermal

Dates

Issue 15 (21 April 2000)

Received 6 October 1999, in final form 6 January 2000



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