Phase Transition in Random Noncommutative Geometries

TL;DR

This paper analytically proves the existence of phase transitions in large N limits of random noncommutative geometries, revealing spectral distribution behaviors and critical transition points.

Contribution

It provides the first analytic proof of phase transitions in certain random noncommutative geometries and characterizes their spectral distributions and transition points.

Findings

Existence of phase transition in large N limit of these geometries.

Spectral distribution can be described using Coulomb gas method.

Identified exact transition point between single and double cut regimes.

Abstract

We present an analytic proof of the existence of phase transition in the large $N$ limit of certain random noncommutaitve geometries. These geometries can be expressed as ensembles of Dirac operators. When they reduce to single matrix ensembles, one can apply the Coulomb gas method to find the empirical spectral distribution. We elaborate on the nature of the large $N$ spectral distribution of the Dirac operator itself. Furthermore, we show that these models exhibit both a single and double cut region for certain values of the order parameter and find the exact value where the transition occurs.