Jan 10 – 15, 2021
Weizmann Institute of Science
Asia/Jerusalem timezone
See you at IS2023 in Copenhagen in June 2023

Hydrodynamic attractors, initial state energy and particle production in relativistic nuclear collisions

Jan 11, 2021, 7:40 PM
1h 30m
Patio (vDLCC)



bullet talk (poster) The initial stages of heavy-ion collisions Poster


Prof. Soeren Schlichting (Universität Bielefeld)


We exploit the concept of hydrodynamic attractors to establish a macroscopic description of the early time out-of-equilibrium dynamics of high energy heavy-ion collisions. One direct consequence is a general relation between the initial state energy and the produced particle multiplicities measured in experiments. When combined with an ab initio model of energy deposition, the entropy production during the pre-equilibrium phase naturally explains the universal centrality dependence of the measured charged particle yields in nucleus-nucleus collisions. Further, we estimate the energy density of the far-from-equilibrium initial state and discuss how our results can be used to constrain non-equilibrium properties of the quark-gluon plasma.

Ref: G. Giacalone, A. Mazeliauskas, S. Schlichting, Phys.Rev.Lett. 123 (2019) 26, 262301 [arXiv:1908.02866]

Primary authors

Dr Aleksas Mazeliauskas (CERN) Giuliano Giacalone (Université Paris-Saclay) Prof. Soeren Schlichting (Universität Bielefeld)

Presentation materials