Fyodorov and Keating's short-interval maximum conjecture for the Riemann zeta function

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Let ζ(s)\zeta(s) denote the Riemann zeta function. For T>0T>0, consider its maximum on the interval [T,T+2π][T,T+2\pi].

Fyodorov and Keating's conjecture. Let ϵ>0\epsilon>0. For T1T_1 sufficiently large depending on ϵ\epsilon, for all T1T2T1T_1\leq T\leq 2T_1, outside a set of “bad” values of TT of measure at most ϵT1\epsilon T_1, one has

maxTtT+2πζ(1/2+it)=exp(loglogT(3/4)logloglogT+Oϵ(1)),\max_{T\leq t\leq T+2\pi}|\zeta(1/2+it)|=\exp(\log\log T-(3/4)\log\log\log T+O_{\epsilon}(1)),

where Oϵ(1)O_{\epsilon}(1) denotes a quantity bounded in terms of ϵ\epsilon. This refines the expected order of the maximum of ζ(1/2+it)|\zeta(1/2+it)| over a short interval and is related to a more precise conjecture for the distribution of its logarithm; its status is not resolved here.

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Sources & referencesView supporting material

Primary source

Adam J. Harper, “A note on the maximum of the Riemann zeta function, and log-correlated random variables”, arXiv:1304.0677 (2013).

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