Ratios conjecture for cubic Dirichlet L-functions

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Let ff be an even Schwartz function, let ww be the weight function, and define the weighted ratio average

Rw(ν′;ν)=∑α”′w(N(α)X)L(χα,12+ν′)L(χα,12+ν).R_w(\nu';\nu)=\sum_{\alpha}”' w\left(\frac{N(\alpha)}{X}\right)\frac{L\left(\chi_\alpha,\frac{1}{2}+\nu'\right)}{L\left(\chi_\alpha,\frac{1}{2}+\nu\right)}.

For Re⁡(2ν′+ν)>−1\operatorname{Re}(2\nu'+\nu)>-1 and Re⁡(ν′)>−1/2\operatorname{Re}(\nu')>-1/2, Ratios conjecture for cubic Dirichlet LL-functions.

Rw(ν′;ν)=W∗(X)ζ(32+3ν′)ζ(32+2ν′+ν)A(ν′;ν)+O(X1/2+ϵ),R_w(\nu';\nu)=W^*(X)\frac{\zeta\left(\frac{3}{2}+3\nu'\right)}{\zeta\left(\frac{3}{2}+2\nu'+\nu\right)}A(\nu';\nu)+O\left(X^{1/2+\epsilon}\right),

where

A(ν′;ν)=ζ(32+2ν′+ν)ζ(32+3ν′)∏p(1+a(p)1−pν′−νp3/2+3ν′−1)A(\nu';\nu)=\frac{\zeta\left(\frac{3}{2}+2\nu'+\nu\right)}{\zeta\left(\frac{3}{2}+3\nu'\right)}\prod_p\left(1+a(p)\frac{1-p^{\nu'-\nu}}{p^{3/2+3\nu'}-1}\right)

and equivalently

A(ν′;ν)=∏p≡1mod  3(1+O(p−5/2−2ν′−ν+p−5/2−3ν′+p−3−4ν′−2ν+p−2)).A(\nu';\nu)=\prod_{p\equiv1\mod 3}\left(1+O\left(p^{-5/2-2\nu'-\nu}+p^{-5/2-3\nu'}+p^{-3-4\nu'-2\nu}+p^{-2}\right)\right).

The ratios conjecture gives a precise prediction for averages of quotients of cubic Dirichlet LL-functions and is used to predict their one-level density. The paper establishes this prediction in the setting considered, while the displayed assertion is presented as the conjectural input.

References

Primary source

Peter J. Cho and Jeongho Park, “Low-lying zeros of cubic Dirichlet L-functions and the Ratios Conjecture”, arXiv:1802.01762 (2019).

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