English

On Birkhoff sums that satisfy no temporal distributional limit theorem for almost every irrational

Dynamical Systems 2023-08-23 v1 Number Theory

Abstract

Dolgpoyat and Sarig showed that for any piecewise smooth function f:TRf: \mathbb{T} \to \mathbb{R} and almost every pair (α,x0)T×T(\alpha,x_0) \in \mathbb{T} \times \mathbb{T}, SN(f,α,x0):=n=1Nf(nα+x0)S_N(f,\alpha,x_0) := \sum_{n =1}^{N} f(n\alpha + x_0) fails to fulfill a temporal distributional limit theorem. In this article, we show that the two-dimensional average is in fact not needed: For almost every αT\alpha \in \mathbb{T} and all x0Tx_0 \in \mathbb{T}, SN(f,α,x0)S_N(f,\alpha,x_0) does not satisfy a temporal distributional limit theorem, regardless of centering and scaling. The obtained results additionally lead to progress in a question posed by Dolgopyat and Sarig.

Keywords

Cite

@article{arxiv.2308.11286,
  title  = {On Birkhoff sums that satisfy no temporal distributional limit theorem for almost every irrational},
  author = {Lorenz Frühwirth and Manuel Hauke},
  journal= {arXiv preprint arXiv:2308.11286},
  year   = {2023}
}

Comments

14 pages, 1 figure, all comments are appreciated