LIMITING SPECTRAL DISTRIBUTIONS OF SUMS OF PRODUCTS OF
NON-HERMITIAN RANDOM MATRICES
Holger Kösters
Alexander Tikhomirov
Abstract: For fixed
and
, let
be independent random
matrices with independent entries, let
, and let
be independent random matrices of the same form as
. We show that as
, the matrices
and
have the same limiting
eigenvalue distribution.
To obtain our results, we apply the general framework recently introduced in Götze,
Kösters, and Tikhomirov (2015) to sums of products of independent random matrices and
their inverses. We establish the universality of the limiting singular value and eigenvalue
distributions, and we provide a closer description of the limiting distributions in terms of free
probability theory.
2010 AMS Mathematics Subject Classification: Primary: 60B20; Secondary: 60E07,
60F05, 46L54.
Keywords and phrases: Non-Hermitian random matrices, limiting spectral distributions,
free probability theory, stable distributions.