Production of Semi Quark Gluon Monopole Plasma by Glasma Decay

TL;DR

This paper investigates how gluons and magnetic monopoles are produced from decaying color fields in the early stages of heavy-ion collisions, revealing a dominance shift based on initial field strength.

Contribution

It introduces a model combining gluons and monopoles to analyze their production during glasma decay, highlighting the role of monopoles at lower field strengths.

Findings

Gluons dominate at high initial field strengths.

Monopoles dominate at low initial field strengths.

The decay behavior resembles thermalized quark-gluon monopole plasmas.

Abstract

Using the standard Lagrangian of gluons and a model of dual superconductor for magnetic monopoles, we calculate the number densities of the gluons and monopoles produced by the decay of background color electric $E$ and magnetic $B$ fields ( glasma ). We find that gluons are dominant decay products when the initial values of the gauge fields are large such that $gE=gB>(0.5\mbox{GeV})^2$, while they are suppressed and monopoles are dominant decay products when the initial values are small such that $gE=gB<(0.4\mbox{GeV})^2$. The feature of the gluon dominance at large $gE=gB$ and the monopole dominance at small $gE=gB$ is similar to the one of thermalized quark gluon monopole plasmas proposed recently, if we identify $\sqrt{gE}=\sqrt{gB}$ as temperatures of the plasmas. Although the model of the monopoles is phenomenological, our analysis suggests that the monopoles play important roles in the decay of the glasmas with small saturation momenta, to which classical statistical field theories are not applicable.