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arXiv 1008.3142math.PR
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截断Weyl腔中的布朗运动

Brownian motion in a truncated Weyl chamber

Wolfgang König, Patrick Schmid

摘要:

我们研究了多维布朗运动从一个不断增长的截断Weyl室的不退出概率。不同的制度,确定根据增长速度,从多项式衰减超过拉伸指数的指数衰减。此外,我们得到了相关的大偏差原则的经验措施的适当重新缩放和转换的布朗运动的尺寸增长到无穷大。我们的主要工具是一个明确的本征值展开的转移概率退出截断外尔室。

英文摘要:

We examine the non-exit probability of a multidimensional Brownian motion from a growing truncated Weyl chamber. Different regimes are identified according to the growth speed, ranging from polynomial decay over stretched-exponential to exponential decay. Furthermore we derive associated large deviation principles for the empirical measure of the properly rescaled and transformed Brownian motion as the dimension grows to infinity. Our main tool is an explicit eigenvalue expansion for the transition probabilities before exiting the truncated Weyl chamber.

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