Microscopic zeta logarithmic-derivative moment conjecture

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

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

limT1log2TE[ζζ(12+iωT+alogT)ζζ(12+iωT+alogT)]=\mathds1Re(a)<0,Re(a)<01e(aa)sgnRe(aa)(aa)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}, limT1log2TE[ζζ(12+iωT+alogT)ζζ(12+iωT+alogT)]=\mathds1Re(a)<0,Re(a)<0+1e(a+a)sgnRe(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.

Sources & referencesView supporting material

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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