Edge Rigidity of Dyson Brownian Motion with General Initial Data

Amol Aggarwal; Jiaoyang Huang

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arXiv · 2308.04236

Edge Rigidity of Dyson Brownian Motion with General Initial Data

Amol Aggarwal·Jiaoyang Huang

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Abstract

In this paper, we study the edge behavior of Dyson Brownian motion with general $\beta$. Specifically, we consider the scenario where the averaged initial density near the edge, on the scale $\eta_*$, is lower bounded by a square root profile. Under this assumption, we establish that the fluctuations of extreme particles are bounded by $(\log n)^{{\rm O}(1)}n^{-2/3}$ after time $C\sqrt{\eta_*}$. Our result improves previous edge rigidity results from [1,24] which require both lower and upper bounds of the averaged initial density. Additionally, combining with [24], our rigidity estimates are used to prove that the distribution of extreme particles converges to the Tracy-Widom $\beta$ distribution in short time.

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Amol Aggarwal, Jiaoyang Huang. 2023-08-08. Edge Rigidity of Dyson Brownian Motion with General Initial Data. https://arxiv.org/abs/2308.04236

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