Open Access
November 2013 The right tail exponent of the Tracy–Widom $\beta$ distribution
Laure Dumaz, Bálint Virág
Ann. Inst. H. Poincaré Probab. Statist. 49(4): 915-933 (November 2013). DOI: 10.1214/11-AIHP475

Abstract

The Tracy–Widom $\beta$ distribution is the large dimensional limit of the top eigenvalue of $\beta$ random matrix ensembles. We use the stochastic Airy operator representation to show that as $a\to\infty$ the tail of the Tracy–Widom distribution satisfies

\[P(\mathit{TW}_{\beta}>a)=a^{-(3/4)\beta+\mathrm{o}(1)}\exp\biggl(-\frac{2}{3}\beta a^{3/2}\biggr).\]

La loi de Tracy–Widom $\beta$ est la limite de la plus grande valeur propre des ensembles $\beta$ de matrices aléatoires lorsque leur taille tend vers l’infini. Nous utilisons la représentation par l’opérateur stochastique d’Airy pour montrer que lorsque $a\to\infty$ la queue de la loi de Tracy–Widom vérifie :

\[P(\mathit{TW}_{\beta}>a)=a^{-(3/4)\beta+\mathrm{o}(1)}\exp\biggl(-\frac{2}{3}\beta a^{3/2}\biggr).\]

Citation

Download Citation

Laure Dumaz. Bálint Virág. "The right tail exponent of the Tracy–Widom $\beta$ distribution." Ann. Inst. H. Poincaré Probab. Statist. 49 (4) 915 - 933, November 2013. https://doi.org/10.1214/11-AIHP475

Information

Published: November 2013
First available in Project Euclid: 2 October 2013

zbMATH: 1278.60012
MathSciNet: MR3127907
Digital Object Identifier: 10.1214/11-AIHP475

Subjects:
Primary: 60F10 , 60H25

Keywords: Beta ensembles , Stochastic Airy operator , Tracy–Widom distribution

Rights: Copyright © 2013 Institut Henri Poincaré

Vol.49 • No. 4 • November 2013
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