Analogy of QCD hadronization and Hawking-Unruh radiation at NICA

TL;DR

This paper extends the analogy between QCD hadronization and Hawking-Unruh radiation to include finite density and charge, providing insights into particle production and freezeout conditions relevant to NICA energy ranges.

Contribution

It introduces a model linking electric charge and density to Hawking-Unruh radiation, improving predictions of particle ratios at finite density and charge.

Findings

The analogy works well for certain freezeout conditions.

The model accurately estimates Kaon-to-pion ratios.

Finite charge affects the radiation temperature and particle yields.

Abstract

The proposed analogy of particle production from high-energy collisions and Hawking-Unruh radiation from black holes is extended to finite density (collisions) and finite-electric charge (black holes). Assuming that the electric charge is directly proportional to the density (or the chemical potential), it becomes clear that for at least two freezeout conditions; constant $s/T^3$ and $E/N$, the proposed analogy works very well. Dependence of radiation (freezeout) temperature on finite electric-charge leads to an excellent estimation for Kaon-to-pion ratio, for instance, especially in the energy range covered by NICA. The precise and complete measurements for various light-flavored particle yields and ratios are essential in characterizing Hawing-Unruh radiation from charged black holes and the QCD hadronization at finite density, as well.