Self-normalized Sums in Free Probability Theory

Fuente: arXiv
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Main Author: Neufeld, Leonie
Format: Preprint
Published: 2024
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author Neufeld, Leonie
author_facet Neufeld, Leonie
contents We show that the distribution of self-normalized sums of free self-adjoint random variables converges weakly to Wigner's semicircle law under appropriate conditions and estimate the rate of convergence in terms of the Kolmogorov distance. In the case of free identically distributed self-adjoint bounded random variables, we retrieve the standard rate of order $n^{-1/2}$ up to a logarithmic factor, whereas we obtain a rate of order $n^{-1/4}$ in the corresponding unbounded setting. These results provide free versions of certain self-normalized limit theorems in classical probability theory.
format Preprint
id arxiv_https___arxiv_org_abs_2406_13601
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Self-normalized Sums in Free Probability Theory
Neufeld, Leonie
Probability
Operator Algebras
46L54, 60F05
We show that the distribution of self-normalized sums of free self-adjoint random variables converges weakly to Wigner's semicircle law under appropriate conditions and estimate the rate of convergence in terms of the Kolmogorov distance. In the case of free identically distributed self-adjoint bounded random variables, we retrieve the standard rate of order $n^{-1/2}$ up to a logarithmic factor, whereas we obtain a rate of order $n^{-1/4}$ in the corresponding unbounded setting. These results provide free versions of certain self-normalized limit theorems in classical probability theory.
title Self-normalized Sums in Free Probability Theory
topic Probability
Operator Algebras
46L54, 60F05
url https://arxiv.org/abs/2406.13601