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arXiv 2009.03026math.PR
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$β$ -Dyson布朗运动与布朗局部时的同构

Isomorphisms of $β$-Dyson's Brownian motion with Brownian local time

Titus Lupu

摘要:

我们证明了高斯自由场与对称马氏过程的占据时之间的Brydges-Fröhlich-Spencer-Dynkin和Le Jan同构推广到$β$ -Dyson的布朗运动.对于$β\in\{1,2,4\}$,这是高斯情况的结果,然而该关系对于一般的$β$成立。我们进一步提出的问题,是否有一个类似的$β$ -戴森的布朗运动一般电网络,内插和外推矩阵值高斯自由场的本征值的领域。在$n=2$的情况下,我们给出一个简单的构造。

英文摘要:

We show that the Brydges-Fröhlich-Spencer-Dynkin and the Le Jan's isomorphisms between the Gaussian free fields and the occupation times of symmetric Markov processes generalize to the $β$-Dyson's Brownian motion. For $β\in\{1,2,4\}$ this is a consequence of the Gaussian case, however the relation holds for general $β$. We further raise the question whether there is an analogue of $β$-Dyson's Brownian motion on general electrical networks, interpolating and extrapolating the fields of eigenvalues in matrix-valued Gaussian free fields. In the case $n=2$ we give a simple construction.

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