English

Separation properties of a hybrid point process with determinantal radii and uniform arguments

Complex Variables 2026-01-06 v1 Functional Analysis Probability

Abstract

We recently characterized the separated determinantal point processes Λϕ\Lambda_\phi associated with Fock spaces Fϕ\mathcal F_\phi in the plane with doubling weight ϕ\phi. We also showed that, as expected, a more restrictive condition is required to characterize the separated Poisson processes with the same first intensities as Λϕ\Lambda_\phi. To gain further insight into this different behavior, we center our attention to radial weights ϕ(z)\phi(z) and introduce a hybrid process ΛϕM={rkeiθk}k=1\Lambda_\phi^M=\{r_k e^{i\theta_k}\}_{k=1}^\infty, where the moduli rkr_k are taken from Λϕ\Lambda_\phi, while the arguments θk\theta_k are chosen independently and uniformly in [0,2π)[0,2\pi). Our main result is that ΛϕM\Lambda_\phi^M is almost surely separated if and only if its first intensity satisfies the same condition as in the Poisson case.

Keywords

Cite

@article{arxiv.2601.01474,
  title  = {Separation properties of a hybrid point process with determinantal radii and uniform arguments},
  author = {Giuseppe Lamberti and Xavier Massaneda},
  journal= {arXiv preprint arXiv:2601.01474},
  year   = {2026}
}