High-dimensional limits of eigenvalue distributions for general Wishart process

Citation
Song Jian et al., High-dimensional limits of eigenvalue distributions for general Wishart process, Annals of applied probability , 30(4), 2020, pp. 1642-1668
ISSN journal
10505164
Volume
30
Issue
4
Year of publication
2020
Pages
1642 - 1668
Database
ACNP
SICI code
Abstract
In this article, we obtain an equation for the high-dimensional limit measure of eigenvalues of generalized Wishart processes, and the results are extended to random particle systems that generalize SDEs of eigenvalues. We also introduce a new set of conditions on the coefficient matrices for the existence and uniqueness of a strong solution for the SDEs of eigenvalues. The equation of the limit measure is further discussed assuming self-similarity on the eigenvalues.