May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Effective kinetic description of event-by-event pre-equilibrium dynamics in high-energy heavy-ion collisions

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Initial state physics and approach to equilibrium Poster Session


Aleksas Mazeliauskas (Universität Heidelberg)


We develop a macroscopic description of the space-time evolution of the energy momentum tensor during the pre-equilibrium stage of a high-energy heavy-ion collision. Based on a weak coupling effective kinetic description of the microscopic equilibration process (a la ``bottom-up"), we calculate the non-equilibrium evolution of the local background energy-momentum tensor as well as the non-equilibrium linear response to transverse energy and momentum perturbations for realistic boost-invariant initial conditions for heavy ion collisions. We demonstrate that this framework can be used on an event-by-event basis to propagate the energy momentum tensor from far-from-equilibrium initial state models, e.g. IP-Glasma, to the time $\tau_\text{hydro}$ when the system is well described by relativistic viscous hydrodynamics. We show that with kinetic theory pre-equilibrium, the final hadron multiplicities and radial and elliptic flows become essentially independent of the hydrodynamic initialization time $\tau_\text{hydro}$. The effective kinetic description of the pre-equilibrium evolution can be also used for studying the chemical equilibration of quarks and gluons and the pre-equilibrium photon production.

Content type Theory
Centralised submission by Collaboration Presenter name already specified

Primary authors

Aleksas Mazeliauskas (Universität Heidelberg) Derek Teaney (Stony Brook University) Eero Aleksi Kurkela (CERN) Jean-Francois Paquet (Duke University) Soeren Schlichting (University of Washington)

Presentation materials