The local ratios conjecture for real translations

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Assume the Riemann hypothesis. Fix k≥1k\geq 1 and real numbers α1,…,αm,β1,…,βm\alpha_1,\ldots,\alpha_m,\beta_1,\ldots,\beta_m such that βℓ≠0\beta_\ell\neq0 for every ℓ\ell and αi≠βj\alpha_i\neq\beta_j for every i,ji,j. Define

E(α,β)={e−α+β,β<0,1,β>0.E(\alpha,\beta)= \begin{cases} e^{-\alpha+\beta},&\beta<0,\\ 1,&\beta>0. \end{cases}

Local ratios conjecture. For these fixed parameters,

1T∫T2T∏ℓ=1mζ(12+αℓlog⁡T+it)ζ(12+βℓlog⁡T+it) dt∼det⁡(E(αi,βj)αi−βj)det⁡(1αi−βj).\frac{1}{T}\int_T^{2T}\prod_{\ell=1}^m\frac{\zeta\left(\frac12+\frac{\alpha_\ell}{\log T}+it\right)}{\zeta\left(\frac12+\frac{\beta_\ell}{\log T}+it\right)}\,dt \sim \frac{\det\left(\frac{E(\alpha_i,\beta_j)}{\alpha_i-\beta_j}\right)}{\det\left(\frac{1}{\alpha_i-\beta_j}\right)}.

This is a first-order local asymptotic for ratios of zeta values near the critical line and is motivated by random-matrix models; it remains conjectural.

References

Primary source

Brad Rodgers, “Tail bounds for counts of zeros and eigenvalues, and an application to ratios”, arXiv:1502.05658 (2017).

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