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arXiv 2609.15937math.NTmath.PR

Hecke特征值和的低阶矩

Low moments of Hecke eigenvalue sums

  • University of Oxford(牛津大学)
  • The University of Hong Kong(香港大学)

机构由 AI 辅助整理,请以论文原文为准。

Jad Hamdan, Sun-Kai Leung, Mo Dick Wong

AI总结:

本文证明Sato--Tate随机乘性函数部分和的优于平方根相消,并借助乘法混沌与Harper去随机化方法,首次在GL(2)自守形式中导出Hecke特征值和及特征形式低阶矩的上界,引入Hecke s-范数。

AI中文摘要:

我们证明由Cogdell和Michel引入的Sato--Tate随机乘性函数的部分和展现出优于平方根级别的相消。证明通过乘法混沌的联系进行,遵循Harper的开创性工作。通过对Harper关于特征和去随机化论证的非平凡改编,我们还获得了Hecke特征值和以及尖点$0$附近Hecke特征形式的低阶矩的上界;据我们所知,这是乘法混沌首次出现在$\nmathrm{GL}(2)$上的自守形式背景中。一个新奇要素是引入了Hecke $s$-范数。

英文摘要:

We show that partial sums of the Sato--Tate random multiplicative functions introduced by Cogdell and Michel exhibit better-than-square-root cancellation. The proof proceeds via a connection to multiplicative chaos, following Harper's seminal work. By a non-trivial adaptation of Harper's derandomization argument for character sums, we also obtain upper bounds for low moments of Hecke eigenvalue sums and of Hecke eigenforms near the cusp $0$; to our knowledge, this is the first appearance of multiplicative chaos in the context of automorphic forms on $\mathrm{GL}(2)$. A novel ingredient is the introduction of Hecke $s$-norms.

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