The CFKRS recipe prediction for elliptic-curve quadratic twists

Let EE be the elliptic curve of conductor NN, with NN not a square, and let OE,k(X;S;M)\mathcal{O}_{E,k}(X;S;M) be the twisted shifted moment defined in the source. For S={s1,,sk}S=\{s_1,\dots,s_k\} and J{1,,k}J\subseteq\{1,\dots,k\}, write SJ={sj:jJ}S_J=\{s_j:j\in J\} and SJ={1sj:jJ}S_J^{-}=\{1-s_j:j\in J\}. Define

HE,M(S):=12ζ(2)Mn1nk=λE(n1)λE(nk)a(MNn1nk)n1s1nksk.H_{E,M}(S):=\frac{1}{2\zeta(2)}\sum_{Mn_1\cdots n_k=\square}\frac{\lambda_E(n_1)\cdots\lambda_E(n_k)a(MNn_1\cdots n_k)}{n_1^{s_1}\cdots n_k^{s_k}}.

CFKRS conjecture. If Re(s)121/logX|\operatorname{Re}(s)-\frac12|\ll1/\log X for all sSs\in S, then as XX\to\infty,

OE,k(X;S;M)J{1,,k}jJXE(sj)X1+J2jJsjg~(1+J2jJsj)HE,MNJ(SSJSJ).\mathcal{O}_{E,k}(X;S;M)\sim\sum_{J\subseteq\{1,\dots,k\}}\prod_{j\in J}\mathcal{X}_E(s_j)X^{1+|J|-2\sum_{j\in J}s_j}\widetilde g\left(1+|J|-2\sum_{j\in J}s_j\right)H_{E,MN^{|J|}}(S\setminus S_J\cup S_J^{-}).

This is the modified CFKRS prediction retaining both parities of J|J|; the source explicitly notes that the earlier parity-restricted prediction is false for k=1k=1 because it omits a term.

Sources & referencesView supporting material

Primary source

Siegfred Baluyot and Martin Čech, “Multiple Dirichlet series predictions for moments of L-functions: unitary, symplectic and orthogonal examples”, arXiv:2501.12529 (2025).

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