English

Extremal bounds for Dirichlet polynomials with random multiplicative coefficients

Number Theory 2023-02-24 v2 Probability

Abstract

For X(n)X(n) a Steinhaus random multiplicative function, we study the maximal size of the random Dirichlet polynomial DN(t)=1NnNX(n)nit, D_N(t) = \frac1{\sqrt{N}} \sum_{n \leq N} X(n) n^{it}, with tt in various ranges. In particular, for fixed C>0C>0 and any small ε>0\varepsilon>0 we show that, with high probability, exp((logN)1/2ε)suptNCDN(t)exp((logN)1/2+ε). \exp( (\log N)^{1/2-\varepsilon} ) \ll \sup_{|t| \leq N^C} |D_N(t)| \ll \exp( (\log N)^{1/2+\varepsilon}).

Keywords

Cite

@article{arxiv.2204.03519,
  title  = {Extremal bounds for Dirichlet polynomials with random multiplicative coefficients},
  author = {Jacques Benatar and Alon Nishry},
  journal= {arXiv preprint arXiv:2204.03519},
  year   = {2023}
}
R2 v1 2026-06-24T10:41:21.747Z