中文

度量对关联不存在 Khintchine 阈值

数论 2019-07-24 v4

摘要

我们考虑形如 (anα)n\left(a_{n} \alpha\right)_{n} mod 1 的序列,其中 α[0,1]\alpha\in\left[0,1\right],且 (an)n\left(a_{n}\right)_{n} 为严格递增的正整数序列。若该序列的对关联渐近分布对几乎全体 α\alpha(依 Lebesgue 测度意义)遵循 Poisson 模型,则称 (an)n(a_n)_n 具有度量对关联性质。近期研究揭示了此类序列对关联的度量理论与 (an)n(a_n)_{n} 截断的加性能量之间的联系。Bloom、Chow、Gafni 与 Walker 推测,可能存在一个收敛/发散判据,能像 Diophantine 逼近度量理论中的 Khintchine 判据那样,用加性能量完全刻画度量对关联性质。本文对这类推测给出否定回答,证明这样的判据并不存在。为此,我们构造了一个具有较大加性能量但却保持度量对关联性质的序列 (an)n(a_n)_n

关键词

引用

@article{arxiv.1802.02659,
  title  = {There is no Khintchine threshold for metric pair correlations},
  author = {Christoph Aistleitner and Thomas Lachmann and Niclas Technau},
  journal= {arXiv preprint arXiv:1802.02659},
  year   = {2019}
}

备注

Version 1: 14 pages. Version 2: Several minor corrections. Version 3: Substantial revision. Improved quantitative results. Major modifications in the presentation of proofs. Included a subsection on the heuristics behind the proof. 17 pages. Version 4: Some further corrections. 17 pages