Gluon Transport Equation with Effective Mass and Dynamical Onset of Bose-Einstein Condensation

TL;DR

This paper investigates how medium-generated effective masses influence gluon transport and Bose-Einstein condensation in dense systems, revealing that mass effects do not alter the qualitative scaling behavior near the onset of condensation.

Contribution

It introduces a modified transport equation for gluons with effective mass and analyzes the dynamical onset of Bose-Einstein condensation considering medium effects.

Findings

Effective mass modifies gluon dispersion relation.

Mass does not qualitatively change the scaling near condensation onset.

Transport dynamics remain similar to the massless case.

Abstract

We study the transport equation describing a dense system of gluons, in the small scattering angle approximation, taking into account medium-generated effective masses of the gluons. We focus on the case of overpopulated systems that are driven to Bose-Einstein condensation on their way to thermalization. The presence of a mass modifies the dispersion relation of the gluon, as compared to the massless case, but it is shown that this does not change qualitatively the scaling behavior in the vicinity of the onset.