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arXiv math/0603404math.PR
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高斯介质中布朗聚合物的超扩散行为

Superdiffusive behavior for a Brownian polymer in a Gaussian medium

Sergio De Carvalho Bezerra, Samy Tindel, Frederi Viens

摘要:

本文研究了随机介质中一维布朗聚合物的渐近行为,该随机介质由时空高斯场W表示,假设W在时间上是白噪声,在空间上是函数值.根据空间协方差W的行为,我们给出了一个下界的权力增长(游荡指数)的聚合物时,时间参数趋于无穷大:该聚合物被证明是超扩散,与游荡指数超过任何$α<3/5$。

英文摘要:

This paper provides information about the asymptotic behavior of a one-dimensional Brownian polymer in random medium represented by a space-time Gaussian field W assumed to be white noise in time and function-valued in space. According to the behavior of the spatial covariance W, we give a lower bound on the power growth (wandering exponent) of the polymer when the time parameter goes to infinity: the polymer is proved to be superdiffusive, with a wandering exponent exceeding any $α<3/5$.

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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