Hyperuniformity of the determinantal point processes associated with the Heisenberg group

TL;DR

This paper extends the Ginibre and Ginibre-type determinantal point processes to higher-dimensional complex spaces, linking their correlation kernels to the Heisenberg group, and proves they are hyperuniform.

Contribution

It introduces a new family of determinantal point processes in higher dimensions connected to the Heisenberg group and establishes their hyperuniformity property.

Findings

All processes are in Class I of hyperuniformity.

The correlation kernels relate to the Schrödinger representations of the Heisenberg group.

Extension of Ginibre processes to higher-dimensional complex spaces.

Abstract

The Ginibre point process is given by the eigenvalue distribution of a non-hermitian complex Gaussian matrix in the infinite matrix-size limit. This is a determinantal point process (DPP) on the complex plane ${\mathbb{C}}$ in the sense that all correlation functions are given by determinants specified by an integral kernel called the correlation kernel. Shirai introduced the one-parameter ($m \in {\mathbb{N}}_0$) extensions of the Ginibre DPP and called them the Ginibre-type point processes. In the present paper we consider a generalization of the Ginibre and the Ginibre-type point processes on ${\mathbb{C}}$ to the DPPs in the higher-dimensional spaces, ${\mathbb{C}}^D, D=2,3, \dots$, in which they are parameterized by a multivariate level $m \in {\mathbb{N}}_0^D$. We call the obtained point processes the extended Heisenberg family of DPPs, since the correlation kernels are generally identified with the correlations of two points in the space of Heisenberg group expressed by the Schr\"{o}dinger representations. We prove that all DPPs in this large family are in Class I of hyperuniformity.