English

New characterizations for Fock spaces

Complex Variables 2025-04-02 v1 Functional Analysis

Abstract

We show that the maximal Fock space FαF^\infty_\alpha on CnC^n is a Lipschitz space, that is, there exists a distance dαd_\alpha on CnC^n such that an entire function ff on CnC^n belongs to FαF^\infty_\alpha if and only if f(z)f(w)Cdα(z,w)|f(z)-f(w)|\le Cd_\alpha(z,w) for some constant CC and all z,wCnz,w\in C^n. This can be considered the Fock space version of the following classical result in complex analysis: a holomorphic function ff on the unit ball BnB_n in CnC^n belongs to the Bloch space if and only if there exists a positive constant CC such that f(z)f(w)Cβ(z,w)|f(z)-f(w)|\le C\beta(z,w) for all z,wBnz,w\in B_n, where β(z,w)\beta(z,w) is the distance on BnB_n in the Bergman metric. We also present a new approach to Hardy-Littlewood type characterizations for FαpF^p_\alpha.

Keywords

Cite

@article{arxiv.2504.00545,
  title  = {New characterizations for Fock spaces},
  author = {Guanlong Bao and Pan Ma and Kehe Zhu},
  journal= {arXiv preprint arXiv:2504.00545},
  year   = {2025}
}

Comments

Accepted by Annales de l'Institut Fourier

R2 v1 2026-06-28T22:42:00.327Z