Quark and gluon production in the presence of the time-varying chiral magnetic current

TL;DR

This paper investigates how a time-varying chiral magnetic conductivity affects quark and gluon production, particle spectra, and jet polarization in quark-gluon plasma, with implications for heavy-ion collision experiments.

Contribution

It provides a detailed analysis of particle production and energy loss due to the time-dependent chiral magnetic effect in both Abelian and non-Abelian systems.

Findings

Time variation of $b_0$ influences particle spectra and energy loss.

Results indicate strong jet polarization in quark-gluon plasma.

Derived rates of chiral Cherenkov and related processes in ultra-relativistic limit.

Abstract

The chiral magnetic effect consists in the induction of the electric current along the direction of the magnetic field. The corresponding transport coefficient $b_0$, known as the chiral magnetic conductivity, is proportional to the chiral imbalance in the medium. In many systems, such as quark-gluon plasma, $b_0$ is time-dependent. This paper studies the effect of the time variation of $b_0$ on the particle spectra and energy loss produced through the chiral Cherenkov and associated processes in Abelian and non-Abelian systems. The rates of all processes are derived in the ultra-relativistic approximation. The results are applied to the relativistic heavy-ion collisions utilizing a specific model describing the relaxation of the initial $P$-odd domain within the quark-gluon plasma. The corresponding energy loss is computed. The results suggest strong polarization of jets in quark-gluon plasma.