Scaling of sub-ballistic 1D Random Walks among biased Random Conductances

Scaling of sub-ballistic 1D Random Walks among biased Random Conductances
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偏置随机电导中亚弹道一维随机游走的缩放

DOI:
10.1214/22-aap1915
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发表时间:
2017
期刊:
arXiv: Probability
影响因子:
--
通讯作者:
M. Salvi
M. Salvi
中科院分区:
--
文献类型:
--
作者:
Q. Berger;M. Salvi

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我们考虑两个模型的一维随机游动之间有偏独立同分布。随机电导:第一个是电导的经典指数倾斜,而第二个来自于将外场添加到点过程上的随机游走的效应(偏置取决于点之间的距离)。我们研究的情况下,步行是短暂的权利,但亚弹道,并确定正确的缩放的随机行走:我们找到$\alpha \在[0,1]$,使$\log X_n / \log n \到\alpha$。有趣的是,在第一种情况下,$\alpha$不依赖于偏差的强度,但在第二种情况下,它依赖于偏差的强度。
We consider two models of one-dimensional random walks among biased i.i.d. random conductances: the first is the classical exponential tilt of the conductances, while the second comes from the effect of adding an external field to a random walk on a point process (the bias depending on the distance between points). We study the case when the walk is transient to the right but sub-ballistic, and identify the correct scaling of the random walk: we find $\alpha \in[0,1]$ such that $\log X_n / \log n \to \alpha$. Interestingly, $\alpha$ does not depend on the intensity of the bias in the first case, but it does in the second case.
DOI: 10.1002/cpa.21491
发表时间: 2013
影响因子: 3
作者:
Fribergh A
通讯作者: Fribergh A