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arXiv 1107.0157cond-mat.stat-mechphysics.soc-ph
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淬火网络接触过程的准稳态模拟

Quasi-stationary simulations of the contact process on quenched networks

Silvio C. Ferreira, Ronan S. Ferreira, Claudio Castellano, Romualdo Pastor-Satorras

摘要:

我们提出了高精度的准静态(QS)模拟淬火网络中的接触过程,使用结构和自然截止的配置模型。的临界行为进行了分析的框架内的异常有限尺寸标度,这是最近被证明持有的退火网络上的接触过程。事实证明,淬火拓扑结构不会定性地改变临界行为,只会导致(如预期的那样)转变点的移动。反常的有限尺寸标度与退火情况下的指数完全相同,因此我们可以得出结论,非均匀平均场论适用于淬火网络上的接触过程,这与以前的说法不一致。有趣的是,自然截止点的存在所引起的拓扑相关性并没有改变这一图景。

英文摘要:

We present high-accuracy quasi-stationary (QS) simulations of the contact process in quenched networks, built using the configuration model with both structural and natural cutoffs. The critical behavior is analyzed in the framework of the anomalous finite size scaling which was recently shown to hold for the contact process on annealed networks. It turns out that the quenched topology does not qualitatively change the critical behavior, leading only (as expected) to a shift of the transition point. The anomalous finite size scaling holds with exactly the same exponents of the annealed case, so that we can conclude that heterogeneous mean-field theory works for the contact process on quenched networks, at odds with previous claims. Interestingly, topological correlations induced by the presence of the natural cutoff do not alter the picture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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