On eigenvalues of the Brownian sheet matrix

Abstract

We derive a system of stochastic partial differential equations satisfied by the eigenvalues of the symmetric matrix whose entries are the Brownian sheets. We prove that the sequence ${\left\{L_d(s,t),(s,t)\in [0,S]\times [0,T]\right\}}_{d\in \mathbb{N}}$ of empirical spectral measures of the rescaled matrices is tight on $C([0,S]\times [0,T],\mathcal{P}(\mathbb{R}))$ and hence is convergent as $d$ goes to infinity by Wigner's semicircle law. We also obtain PDEs which are satisfied by the high-dimensional limiting measure.

34 pages