Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 13: Heavy-Ion Collisions and QCD Phases IV

HK 13.3: Talk

Monday, March 28, 2022, 16:30–16:45, HK-H2

Non-Equilibrium Transport of Conserved Charges in High- Energy Heavy Ion Collisions — •Philip Plaschke and Sören Schlichting — Bielefeld University, Germany

Non-equilibrium Green*s functions provide an efficient way to describe the pre-equilibrium evolution of macroscopic quantities in early stages of heavy-ion collisions. Within the kinetic theory framework we use moments of the distribution functions to calculate time dependent non-equilibrium Green*s functions describing the evolution of initial energy/momentum/charge perturbations [1]. Using kinetic theory in relaxation time approximation we will study the pre-equilibrium evolution of a Bjorken background and compute Green*s functions for the charge current and energy-momentum tensor for initial perturbations around this background. By calculating the Green*s functions, we show that only modes with long wavelength survive up into the hydrodynamic regime. [1] [Kamata, Martinez, PP, Ochsenfeld, Schlichting, Phys. Rev. D (2020)]