Pressure isotropization in high energy heavy ion collisions

TL;DR

This paper investigates how pressure isotropization occurs in high energy heavy ion collisions using classical lattice simulations within the Color Glass Condensate framework, highlighting the effects of coupling strength on pressure ratios.

Contribution

It provides new insights into the dynamics of pressure isotropization and the transient regime duration in heavy ion collisions at different coupling constants.

Findings

Rapid increase in pressure ratio with higher coupling

Transient regime lasts about 1 fm/c

Pressure isotropization occurs during early collision stages

Abstract

The early stages of high energy heavy ion collisions are studied in the Color Glass Condensate framework, with a real-time classical lattice simulation. When increasing the coupling constant, we observe a rapid increase of the ratio of longitudinal to transverse pressure. The transient regime that precedes this behavior is of the order of 1 fm/c.