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Online S@INT Seminar:  "Hydrodynamics attractors, initial state energy and particle production in relativistic nuclear collisions"

Soeren Schlichting, Bielefeld University
Thursday, April 9, 2020 - 10:00am

The talk will be given via Zoom at the following link - at 10 am Pacific Time.   The format is similar to the usual one-hour time slot with a ~40 min talk, and a moderator facilitating questions from audience members. We look forward to seeing you there!


Explaining how a nearly equilibrated Quark-Gluon plasma emerges in the collision of heavy nuclei has been one of the central goals of the heavy ion theory community. We exploit recent advances in the theoretical understanding to establish a macroscopic description of the early-time out-of-equilibrium dynamics of high energy heavy-ion collisions and investigate phenomenological consequences of the pre-equilibrium phase. 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. We further 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.

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