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arXiv 1004.0301math.PRmath-phmath.MP
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与随机矩阵有关的Infinite-dimensional随机微分方程

Infinite-dimensional stochastic differential equations related to random matrices

Hirofumi Osada

摘要:

我们解决了无穷维随机微分方程(ISDE)描述了一个无限数量的布朗粒子通过二维库仑势相互作用。相关的未标记随机动力学的平衡态是随机矩阵理论中出现的Ginibre随机点场和Dyson测度。为了求解ISDE,我们建立了这些措施的分部积分法公式。由于二维库仑势的长程效应很强,布朗粒子与二维库仑势相互作用的性质与布朗粒子与Ruelle类相互作用势相互作用的性质有很大的不同。作为一个例子,我们证明了与Ginibre随机点场相关联的相互作用布朗粒子满足多个ISDE。

英文摘要:

We solve infinite-dimensional stochastic differential equations (ISDEs) describing an infinite number of Brownian particles interacting via two-dimensional Coulomb potentials. The equilibrium states of the associated unlabeled stochastic dynamics are the Ginibre random point field and Dyson's measures, which appear in random matrix theory. To solve the ISDEs we establish an integration by parts formula for these measures. Because the long-range effect of two-dimensional Coulomb potentials is quite strong, the properties of Brownian particles interacting with two-dimensional Coulomb potentials are remarkably different from those of Brownian particles interacting with Ruelle's class interaction potentials. As an example, we prove that the interacting Brownian particles associated with the Ginibre random point field satisfy plural ISDEs.

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