## Abstract

It is an open question whether the fractional parts of non-linear polynomials at integers have the same fine-scale statistics as a Poisson point process. Most results towards an affirmative answer have so far been restricted to almost sure convergence in the space of polynomials of a given degree. We will here provide explicit Diophantine conditions on the coefficients of polynomials of degree two, under which the convergence of an averaged pair correlation density can be established. The limit is consistent with the Poisson distribution. Since quadratic polynomials at integers represent the energy levels of a class of integrable quantum systems, our findings provide further evidence for the Berry-Tabor conjecture in the theory of quantum chaos.

Original language | English |
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Pages (from-to) | 960-983 |

Number of pages | 24 |

Journal | Compositio Mathematica |

Volume | 154 |

Issue number | 5 |

DOIs | |

State | Published - 1 May 2018 |

Externally published | Yes |

### Bibliographical note

Publisher Copyright:© The Authors 2018.

## Keywords

- Berry-Tabor conjecture
- Poisson statistics
- distribution mod 1
- pair correlation

## ASJC Scopus subject areas

- Algebra and Number Theory