Comment on ``Critical behavior of a two-species reaction-diffusion problem''

Details Comment on ``Critical behavior of a two-species reaction-diffusion problem'' Comment on ``Critical behavior of a two-species reaction-diffusion problem''

2000-07-24

arxiv.org/abs/cond-mat/0007366v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.64.058101

In a recent paper, de Freitas et al. [Phys. Rev. E 61, 6330 (2000)] presented simulational results for the critical exponents of the two-species reaction-diffusion system A + B -> 2B and B -> A in dimension d = 1. In particular, the correlation length exponent was found as \nu = 2.21(5) in contradiction to the exact relation \nu = 2/d. In this Comment, the symmetry arguments leading to exact critical exponents for the universality class of this reaction-diffusion system are concisely reconsidered.

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