Fyodorov–Keating conjecture on moments of regularized counting statistics

Let ZN(θ)Z_N(\theta) be the regularized counting-statistics field and let γ>0\gamma>0. Define

MNγ:=02πeγZN(θ)dθ.M_N^{\gamma}:=\int_0^{2\pi}e^{\gamma Z_N(\theta)}\,d\theta.

For any qNq\in\mathbb{N} such that γ2q<2\gamma^2q<2, let Cμ,qC_{\mu,q} denote the normalization constant appearing in the conjectured moment asymptotics, let G(z)G(z) be the Barnes GG-function, and set

Cγ,q=G(1+γ/2)2qG(1+γ2)q.C_{\gamma,q}=\frac{G(1+\gamma/\sqrt{2})^{2q}}{G(1+\gamma\sqrt{2})^q}.

Fyodorov–Keating conjecture.

limNNγ2q2E[(MNγ)q]=Cμ,q[0,2π]q1j<kqeiθjeiθkγ2dθ1dθq=Cγ,q(2π)qΓ(1γ2q/2)Γ(1γ2/2)q.\lim_{N\to\infty}N^{-\frac{\gamma^2q}{2}}\mathbb{E}[(M_N^{\gamma})^q] =C_{\mu,q}\int_{[0,2\pi]^q}\prod_{1\leq j<k\leq q}|e^{i\theta_j}-e^{i\theta_k}|^{-\gamma^2}\,d\theta_1\cdots d\theta_q =C_{\gamma,q}(2\pi)^q\frac{\Gamma(1-\gamma^2q/2)}{\Gamma(1-\gamma^2/2)^q}.

This conjecture concerns the total mass of the exponential of the log-correlated field arising from regularized random-matrix counting statistics and is related to predictions for the extreme values of that field. The source states that, for q1,2q\neq1,2, the conjecture remains an open problem; the row is therefore open.

Sources & referencesView supporting material

Primary source

Gaultier Lambert, Dmitry Ostrovsky and Nick Simm, “Subcritical multiplicative chaos for regularized counting statistics from random matrix theory”, arXiv:1612.02367 (2018).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.