Microscopic zeta logarithmic-derivative moment conjecture

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Let ω\omega be uniform on [0,1][0,1], let T→∞T\to\infty, and let a,a′∈Ca,a'\in\mathbb C. The source considers the logarithmic derivative of the Riemann zeta function at points shifted from the critical line by a/log⁡Ta/\log T and a′/log⁡Ta'/\log T.

Microscopic logarithmic-derivative moment conjecture. The following two asymptotic identities should hold:

lim⁡T→∞1log⁡2TE[ζ′ζ(12+iωT+alog⁡T)ζ′ζ(12+iωT+a′log⁡T)]=\mathds1Re⁡(a)<0,Re⁡(a′)<0−1−e−(a′−a)sgn⁡Re⁡(a′−a)(a−a′)2\mathds1Re⁡(a)Re⁡(a′)<0,\lim_{T\to\infty}\frac{1}{\log^2T}\mathbb E\left[\frac{\zeta'}{\zeta}\left(\frac12+i\omega T+\frac{a}{\log T}\right)\frac{\zeta'}{\zeta}\left(\frac12+i\omega T+\frac{a'}{\log T}\right)\right] =\mathds{1}_{\operatorname{Re}(a)<0,\operatorname{Re}(a')<0}-\frac{1-e^{-(a'-a)\operatorname{sgn}\operatorname{Re}(a'-a)}}{(a-a')^2}\mathds{1}_{\operatorname{Re}(a)\operatorname{Re}(a')<0}, lim⁡T→∞1log⁡2TE[ζ′ζ(12+iωT+alog⁡T)ζ′ζ(12+iωT+a′log⁡T)‾]=\mathds1Re⁡(a)<0,Re⁡(a′)<0+1−e−(a+a′‾)sgn⁡Re⁡(a+a′‾)(a+a′‾)2\mathds1Re⁡(a)Re⁡(a′)>0.\lim_{T\to\infty}\frac{1}{\log^2T}\mathbb E\left[\frac{\zeta'}{\zeta}\left(\frac12+i\omega T+\frac{a}{\log T}\right)\overline{\frac{\zeta'}{\zeta}\left(\frac12+i\omega T+\frac{a'}{\log T}\right)}\right] =\mathds{1}_{\operatorname{Re}(a)<0,\operatorname{Re}(a')<0}+\frac{1-e^{-(a+\overline{a'})\operatorname{sgn}\operatorname{Re}(a+\overline{a'})}}{(a+\overline{a'})^2}\mathds{1}_{\operatorname{Re}(a)\operatorname{Re}(a')>0}.

These formulas are proposed as consequences of the preceding process conjecture, provided the relevant moments are controlled. They describe second moments on the microscopic scale and remain conjectural.

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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