arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.09050math.NT
收藏

一大类自守L-函数的低阶零点密度研究

On the Density of Low Lying Zeros of a Large Family of Automorphic $L$-functions

University of Wisconsin(威斯康星大学);Massachusetts Institute of Technology(麻省理工学院);Princeton University(普林斯顿大学);Williams College(威廉姆斯学院);University of Cambridge(剑桥大学)

Timothy Cheek, Pico Gilman, Kareem Jaber, Steven J. Miller, Marie-Hélène Tomé

AI总结:

该研究在GRH下推广了相关技术,改进了自守L-函数中心矩的密度结果,扩展了Katz-Sarnak密度预测的成立范围,相关技术可用于多素数求和量的研究。

摘要:

在广义黎曼假设(GRH)下,Baluyot、Chandee和Li将正交对称的一大类自守L-函数的Katz-Sarnak低阶零点密度预测的已知成立范围几乎翻倍。我们将他们的主要技术推广到该类函数一阶密度的高阶中心矩研究,得到了中心点附近行为的更优结果。研究中出现了一阶密度不存在的大量技术障碍。在对形式的阶取平均并假设GRH的前提下,我们证明:对于傅里叶变换紧支于区间(-σ, σ)的检验函数,其中σ = min{3/2(n-1), 4/(2n - 1_{2|n})}(1_{2|n}为指示函数,当n为偶数时取1,奇数时取0),Katz-Sarnak预测的密度对n阶中心矩成立。当n=3时,我们将此前已知的最优σ=2/3提升至σ=3/4。我们还证明,对于傅里叶变换分别紧支于σ₁=3/2和σ₂=5/6的检验函数,二阶密度与Katz-Sarnak密度猜想一致,扩展了此前已知的支撑和σ₁+σ₂=2。本研究首次提供了一种有趣新现象的证据:通过选取不同的检验函数,我们能够扩展Katz-Sarnak密度预测的成立范围。我们开发的技术可应用于理解该类函数中含多个素数求和的相关量。

英文摘要:

Under the generalized Riemann Hypothesis (GRH), Baluyot, Chandee, and Li nearly doubled the range in which the density of low lying zeros predicted by Katz and Sarnak is known to hold for a large family of automorphic $L$-functions with orthogonal symmetry. We generalize their main techniques to the study of higher centered moments of the one-level density of this family, leading to better results on the behavior near the central point. Numerous technical obstructions emerge that are not present in the one-level density. Averaging over the level of the forms and assuming GRH, we prove the density predicted by Katz and Sarnak holds for the $n$-th centered moments for test functions whose Fourier transform is compactly supported in $(-σ, σ)$ for $σ~=~\min\left\{3/2(n-1), 4/(2n-\mathbf{1}_{2\nmid n})\right\}$. For $n=3$, our results improve the previously best known $σ=2/3$ to $σ=3/4$. We also prove the two-level density agrees with the Katz-Sarnak density conjecture for test functions whose Fourier transform is compactly supported in $σ_1 = 3/2$ and $σ_2 = 5/6$, respectively, extending the previous best known sum of supports $σ_1 + σ_2 = 2$. This work is the first evidence of an interesting new phenomenon: by taking different test functions, we are able to extend the range in which the Katz-Sarnak density predictions hold. The techniques we develop can be applied to understanding quantities related to this family containing sums over multiple primes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑