The logarithmic law of sample correlation matrices
Probability
2026-03-23 v1
Abstract
Let be the sample correlation matrix constructed from , whose entries are independent and identically distributed random variables with mean zero and tail probability condition . We derive the universal logarithmic law for , \begin{equation*} \frac{\log \det \mathbf{R}-(p-n+1/2)\log (1-\frac{p-1}{n})+p-\frac{p}{n}}{\sqrt{-2\log (1-\frac{p-1}{n})-2\frac{p}{n}}}\stackrel{d}{\rightarrow} {N}(0,1), \end{equation*} if as . Moreover, under the near-singularity case for any , it is shown that the tail probability condition can be weakened to for any constant .
Cite
@article{arxiv.2603.19800,
title = {The logarithmic law of sample correlation matrices},
author = {Yanpeng Li and Zhi Liu and Jiahui Xie and Wang Zhou},
journal= {arXiv preprint arXiv:2603.19800},
year = {2026}
}
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56 pages