Finite-Size Scaling in the Driven Lattice Gas

Details Finite-Size Scaling in the Driven Lattice Gas Finite-Size Scaling in the Driven Lattice Gas

2003-12-08

arxiv.org/abs/cond-mat/0312175v1

J.Statist.Phys. 115 (2004) 281-322

Physics

Condensed Matter

Statistical Mechanics

40 pages, in honour of G. Jona-Lasinio

Scientific paper

10.1023/B:JOSS.0000019824.34397.

We present a Monte Carlo study of the high-temperature phase of the two-dimensional driven lattice gas at infinite driving field. We define a finite-volume correlation length, verify that this definition has a good infinite-volume limit independent of the lattice geometry, and study its finite-size-scaling behavior. The results for the correlation length are in good agreement with the predictions based on the field theory proposed by Janssen, Schmittmann, Leung, and Cardy. The theoretical predictions for the susceptibility and the magnetization are also well verified. We show that the transverse Binder parameter vanishes at the critical point in all dimensions $d\ge 2$ and discuss how such result should be expected in the theory of Janssen et al. in spite of the existence of a dangerously irrelevant operator. Our results confirm the Gaussian nature of the transverse excitations.

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