Microscopic zeta-function process convergence to the limiting characteristic function

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Let ω\omega be uniform on [0,1][0,1], let T>0T>0 tend to infinity, and let ξ∞\xi_{\infty} be the limiting random analytic function arising from the microscopic scaling of characteristic polynomials of Haar-distributed unitary matrices. For z∈Cz\in\mathbb C, consider the randomized, renormalized zeta function

FT(z):=ζ(12+iTω−2πizlog⁡T)ζ(12+iTω).F_T(z):=\frac{\zeta\left(\frac12+iT\omega-\frac{2\pi i z}{\log T}\right)}{\zeta\left(\frac12+iT\omega\right)}.

Microscopic zeta-function convergence conjecture. In law, uniformly for zz on every compact subset of C\mathbb C,

(FT(z);z∈C)⟶T→∞(ξ∞(z);z∈C).\bigl(F_T(z);z\in\mathbb C\bigr)\underset{T\to\infty}{\longrightarrow}\bigl(\xi_{\infty}(z);z\in\mathbb C\bigr).

Moreover, on compact sets bounded away from the real line, the logarithmic derivatives should satisfy

(−2πilog⁡Tζ′ζ(12+iTω−2πizlog⁡T);z∈C)⟶T→∞(ξ∞′ξ∞(z);z∈C).\left(\frac{-2\pi i}{\log T}\frac{\zeta'}{\zeta}\left(\frac12+iT\omega-\frac{2\pi i z}{\log T}\right);z\in\mathbb C\right)\underset{T\to\infty}{\longrightarrow}\left(\frac{\xi_{\infty}'}{\xi_{\infty}}(z);z\in\mathbb C\right).

This is the source's central process-level conjecture linking the microscopic zeta function to the limiting random analytic function. It would imply corresponding predictions for microscopic zeros and logarithmic derivatives, but no resolution is stated.

References

Primary source

Reda Chhaibi, Joseph Najnudel and Ashkan Nikeghbali, “The Circular Unitary Ensemble and the Riemann zeta function: the microscopic landscape and a new approach to ratios”, arXiv:1410.1440 (2015).

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