Comment on ``Dynamic behavior of anisotropic non-equilibrium driving lattice gases''

Details Comment on ``Dynamic behavior of anisotropic non-equilibrium driving lattice gases'' Comment on ``Dynamic behavior of anisotropic non-equilibrium driving lattice gases''

2003-05-09

arxiv.org/abs/cond-mat/0305213v1

Phys.Rev.Lett. 92 (2004) 029601

Physics

Condensed Matter

1 page

Scientific paper

10.1103/PhysRevLett.92.029601

In a recent Letter Albano and Saracco study the dynamic critical behavior of some anisotropic driven lattice gases by Monte Carlo (MC) simulations. In this Comment we point out that the Ans\"atze they use to relate the measured scaling exponents with the critical exponents analytically computed within different field-theoretical approaches do not take properly into account the strongly anisotropic nature of the phase transition, by implicitly assuming $z = z_{\bot} = z_{\parallel}$. As a consequence, at variance with the claims by the authors, their MC data are not conclusive to determine which one of the field theories proposed in the literature correctly describes the universal properties of the phase transition in these lattice gases.

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