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arXiv 1605.07005cond-mat.dis-nnphysics.optics
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三维共振点散射体系综中标量波局域化跃迁的有限尺寸标度分析

Finite-size scaling analysis of localization transition for scalar waves in a 3D ensemble of resonant point scatterers

S. E. Skipetrov

摘要:

利用随机格林矩阵模型研究了三维共振点散射体系综中标量波局域化跃迁的标度性质。我们表明,准模式$g$的归一化衰减率的概率密度$p(g)$是非常广泛的过渡和本地化制度,它不服从一个单一的参数标度律有限的系统尺寸,我们可以访问。然而,单参数标度律适用于$p(g)$的小$g$部分,我们利用它来估计局域化转变的临界指数$ν$。小$q$的有限尺寸标度分析可获得$p(g)$的$g_q$估计值$ν\simeq 1.55 \pm 0.07$。这个值与以前的结果是一致的安德森过渡在3D正交普适类,并建议在研究中的本地化过渡属于同一类。

英文摘要:

We use the random Green's matrix model to study the scaling properties of the localization transition for scalar waves in a three-dimensional (3D) ensemble of resonant point scatterers. We show that the probability density $p(g)$ of normalized decay rates of quasi-modes $g$ is very broad at the transition and in the localized regime and that it does not obey a single-parameter scaling law for finite system sizes that we can access. The single-parameter scaling law holds, however, for the small-$g$ part of $p(g)$ which we exploit to estimate the critical exponent $ν$ of the localization transition. Finite-size scaling analysis of small-$q$ percentiles $g_q$ of $p(g)$ yields an estimate $ν\simeq 1.55 \pm 0.07$. This value is consistent with previous results for Anderson transition in the 3D orthogonal universality class and suggests that the localization transition under study belongs to the same class.

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