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arXiv 1209.4385cond-mat.stat-mech
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三维Eden团与Kardar-Parisi-Zhang普适类

Eden clusters in three-dimensions and the Kardar-Parisi-Zhang universality class

Sidiney G. Alves, Silvio C. Ferreira

摘要:

我们提出了大规模的模拟径向伊甸园集群在三维和显示的增长指数是在协议的值$β=0.242$接受的Kardar-Parisi-Zhang(KPZ)普适性类。我们的研究结果驳斥了最近的断言,提出径向伊甸园生长在$d=3$属于一个普遍性的类不同的KPZ。我们将先前报道的差异缓慢收敛到渐近极限。我们还提出了偏度和峰度的粗糙化制度的平面几何2+1维。

英文摘要:

We present large-scale simulations of radial Eden clusters in three-dimensions and show that the growth exponent is in agreement with the value $β=0.242$ accepted for the Kardar-Parisi-Zhang (KPZ) universality class. Our results refute a recent assertion proposing that radial Eden growth in $d=3$ belongs to a universality class distinct from KPZ. We associate the previously reported discrepancy to a slow convergence to the asymptotic limit. We also present the skewness and kurtosis in the roughening regime for flat geometry in 2+1 dimensions.

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