Nonequilibrium phase transition on a randomly diluted lattice.
Nonequilibrium phase transition on a randomly diluted lattice.
复制标题
随机稀释晶格上的非平衡相变。
DOI：
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发表时间：
2005
影响因子：
8.6
通讯作者：
Man Young Lee
中科院分区：
文献类型：
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作者：
T. Vojta;Man Young Lee
我们证明了几何临界性和动态涨落之间的相互作用导致了随机稀释晶格上接触过程的一种新颖的普遍性类别。跨越晶格渗流阈值的非平衡相变的特点是非常规的激活（指数）动态缩放和强格里菲斯效应。我们计算了两个和三个空间维度的临界行为，并将我们的结果与最近发现的无序一维接触过程中的无限随机不动点联系起来。
We show that the interplay between geometric criticality and dynamical fluctuations leads to a novel universality class of the contact process on a randomly diluted lattice. The nonequilibrium phase transition across the percolation threshold of the lattice is characterized by unconventional activated (exponential) dynamical scaling and strong Griffiths effects. We calculate the critical behavior in two and three space dimensions, and we also relate our results to the recently found infinite-randomness fixed point in the disordered one-dimensional contact process.