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arXiv · 2403.11474

The 2-adic valuations of the algebraic central $L$-values for quadratic twists of weight 2 newforms

Taiga Adachi·Keiichiro Nomoto·Ryota Shii
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Abstract

Let $f$ be a normalized newform of weight 2 on $Γ_0(N)$ whose coefficients lie in $\mathbb{Q}$ and let $χ_M$ be a primitive quadratic Dirichlet character with conductor $M$. In this paper, under mild assumptions on $M$, we give a sharp lower bound of the 2-adic valuation of the algebraic central $L$-value $L(f, χ_M, 1)$ and evaluate the 2-adic valuation for an infinite number of $M$.

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Taiga Adachi, Keiichiro Nomoto, Ryota Shii. 2025-10-09. The 2-adic valuations of the algebraic central $L$-values for quadratic twists of weight 2 newforms. https://arxiv.org/abs/2403.11474

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