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arXiv 1003.4978math.PR
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Bouchaud变漂移行走

Bouchaud walks with variable drift

Manuel Cabezas Parra

摘要:

本文研究了具有漂移的$\mathbb{Z}$上的一系列Bouchaud陷阱模型。我们分析了一系列行走的可能缩放限制,当我们重新缩放行走时,我们使漂移衰减到0。根据漂移的衰减速度,我们得到三个不同的标度极限。如果漂移随着我们重新缩放行走而缓慢衰减,则我们获得环境不均匀性的α $-stable subordinator as scaling limit. If the drift decays quickly as we rescale the walks, we obtain the F.I.N. diffusion as scaling limit. There is a critical speed of decay separating these two main regimes, where a new process appears as scaling limit. This critical speed is related to the index $ α$的逆。

英文摘要:

In this paper we study a sequence of Bouchaud trap models on $\mathbb{Z}$ with drift. We analyze the possible scaling limits for a sequence of walks, where we make the drift decay to 0 as we rescale the walks. Depending on the speed of the decay of the drift we obtain three different scaling limits. If the drift decays slowly as we rescale the walks we obtain the inverse of an α$-stable subordinator as scaling limit. If the drift decays quickly as we rescale the walks, we obtain the F.I.N. diffusion as scaling limit. There is a critical speed of decay separating these two main regimes, where a new process appears as scaling limit. This critical speed is related to the index $α$ of the inhomogeneity of the environment.

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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