Pair contact process with diffusion - A new type of nonequilibrium critical behavior?

Abstract

Recently Carlon et. al. investigated the critical behavior of the pair contact process with diffusion [cond-mat/9912347]. Using density matrix renormalization group methods, they estimate the critical exponents, raising the possibility that the transition might belong to the same universality class as branching annihilating random walks with even numbers of offspring. This is surprising since the model does not have an explicit parity-conserving symmetry. In order to understand this contradiction, we estimate the critical exponents by Monte Carlo simulations. The results suggest that the transition might belong to a different universality class that has not been investigated before.

RevTeX, 3 pages, 2 eps figures, adapted to final version of cond-mat/9912347

References in corpus (3)

• Nonequilibrium Critical Phenomena and Phase Transitions into Absorbing States
• Critical properties of the reaction - diffusion model 2A -> 3A, 2A ->0
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Cited by in corpus (43)

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• Critical properties of the reaction - diffusion model 2A -> 3A, 2A ->0
• Absorbing Phase Transitions of Branching-Annihilating Random Walks
• The non-equilibrium phase transition of the pair-contact process with diffusion
• Towards Classification of Phase Transitions in Reaction--Diffusion Models
• Novel universality class of absorbing transitions with continuously varying critical exponents
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