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arXiv 0711.2197cond-mat.stat-mech
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从非平衡相变到吸收态的研究:以扩散对接触过程为中心

Nonequilibrium Phase Transitions into Absorbing States: Focused around the pair contact process with diffusion

Su-Chan Park, Hyunggyu Park

摘要:

具有吸收(俘获)态的系统可能会表现出从无噪声的非活性相到持续活性相的非平衡相变。本文简要回顾了吸收临界现象和普适类,并讨论了有扩散的对接触过程(PCPD)中有争议的问题。提出了两种不同的方法来澄清它的普适性问题,揭示了强有力的证据,PCPD属于一个新的普适类以外的定向渗流类。

英文摘要:

Systems with absorbing (trapped) states may exhibit a nonequilibrium phase transition from a noise-free inactive phase into an ever-lasting active phase. We briefly review the absorbing critical phenomena and universality classes, and discuss over the controversial issues on the pair contact process with diffusion (PCPD). Two different approaches are proposed to clarify its universality issue, which unveil strong evidences that the PCPD belongs to a new universality class other than the directed percolation class.

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