Ratios conjecture for cubic Dirichlet L-functions

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

Rw(ν;ν)=αw(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)1pννp3/2+3ν1)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)=p1mod3(1+O(p5/22νν+p5/23ν+p34ν2ν+p2)).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.

Sources & referencesView supporting material

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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