Conditional Upper Bounds for Large Deviations and Moments of the Riemann Zeta Function

Fuente: arXiv
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Main Authors: Arguin, Louis-Pierre, Bailey, Emma, Roberts, Asher
Format: Preprint
Published: 2026
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author Arguin, Louis-Pierre
Bailey, Emma
Roberts, Asher
author_facet Arguin, Louis-Pierre
Bailey, Emma
Roberts, Asher
contents Assuming the Riemann Hypothesis, we show that for $k>0$ $$ \frac{1}{T}\text{meas}\Big\{t\in [T,2T]:|ζ(1/2+{\rm i} t)|>(\log T)^k\Big\}\leq C_k \frac{(\log T)^{-k^2}}{\sqrt{\log\log T}}, $$ where $C_k=\exp(e^{ck})$ for some absolute constant $c>0$. This implies that the $2k$-moments of $|ζ|$ are bounded above by $C_k(\log T)^{k^2}$, recovering the bound of Harper. The proof relies on the recursive scheme of one of the authors with Bourgade and Radziwill (2020), and combines ideas of Soundararajan (2009) and Harper (2013).
format Preprint
id arxiv_https___arxiv_org_abs_2604_25579
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Conditional Upper Bounds for Large Deviations and Moments of the Riemann Zeta Function
Arguin, Louis-Pierre
Bailey, Emma
Roberts, Asher
Number Theory
Probability
11M06, 60F10, 60G70
Assuming the Riemann Hypothesis, we show that for $k>0$ $$ \frac{1}{T}\text{meas}\Big\{t\in [T,2T]:|ζ(1/2+{\rm i} t)|>(\log T)^k\Big\}\leq C_k \frac{(\log T)^{-k^2}}{\sqrt{\log\log T}}, $$ where $C_k=\exp(e^{ck})$ for some absolute constant $c>0$. This implies that the $2k$-moments of $|ζ|$ are bounded above by $C_k(\log T)^{k^2}$, recovering the bound of Harper. The proof relies on the recursive scheme of one of the authors with Bourgade and Radziwill (2020), and combines ideas of Soundararajan (2009) and Harper (2013).
title Conditional Upper Bounds for Large Deviations and Moments of the Riemann Zeta Function
topic Number Theory
Probability
11M06, 60F10, 60G70
url https://arxiv.org/abs/2604.25579