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arXiv 1012.5786cond-mat.stat-mech
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淬火陷阱模型中随机游动的时间变换

Time transformation for random walks in the quenched trap model

S. Burov, E. Barkai

摘要:

本文用弱从属破缺的方法研究了淬火陷阱模型中的扩散问题。我们映射到布朗运动的问题,并表明,操作时间是${\cal S}_α= \sum_{x=-\infty} ^\infty (n_x)^α$,其中$n_x$是访问数在网站$x$。在零温极限下,我们恢复了Monthus的重整化群解。我们的方法是一种替代RG能够处理任何无序强度。

英文摘要:

Diffusion in the quenched trap model is investigated with an approach we call weak subordination breaking. We map the problem onto Brownian motion and show that the operational time is ${\cal S}_α= \sum_{x=-\infty} ^\infty (n_x)^α$ where $n_x$ is the visitation number at site $x$ . In the limit of zero temperature we recover the renormalization group (RG) solution found by Monthus. Our approach is an alternative to RG capable of dealing with any disorder strength.

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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