Hydrodynamic-like behaviour of glasma

TL;DR

This paper explores how the early-stage glasma in heavy-ion collisions, composed of classical gluon fields, exhibits hydrodynamic-like behavior despite being governed by Yang-Mills equations.

Contribution

It demonstrates that the evolution of glasma can be approximately described using hydrodynamic concepts, bridging classical field theory and fluid dynamics.

Findings

Glasma exhibits hydrodynamic-like evolution patterns.

Classical chromodynamic fields can mimic fluid behavior.

Hydrodynamic descriptions are applicable at early collision stages.

Abstract

At the earliest stage of ultrarelativistic heavy-ion collisions the produced matter is a highly populated system of gluons called glasma which can be approximately described in terms of classical chromodynamic fields. Although the system's dynamics is governed by Yang-Mills equations, glasma evolution is shown to strongly resemble hydrodynamic behaviour.