Pair contact process with diffusion: A new type of nonequilibrium critical behavior? art. no. 036102

被引:62
作者
Hinrichsen, H [1 ]
机构
[1] Univ Duisburg Gesamthsch, Fachbereich 10, D-47048 Duisburg, Germany
来源
PHYSICAL REVIEW E | 2001年 / 63卷 / 03期
关键词
D O I
10.1103/PhysRevE.63.036102
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
In the preceding article Carlon ei al. investigate the critical behavior of the pair contact process with diffusion. 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.
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