SMuK 2021 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Heavy-Ion Collisions and QCD Phases V

HK 27.3: Talk

Friday, September 3, 2021, 14:45–15:00, H1

Non-Equilibrium Transport of Conserved Charges in High-Energy Heavy Ion Collisions — •Philip Plaschke — 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 derived a new method to calculate time dependent non-equilibrium Green*s functions describing the evolution of energy and momentum perturbations on top of an evolving far-from-equilibrium background. We further extend this formalism to describe the evolution of conserved charges. Within kinetic theory in relaxation time approximation we will study the pre-equilibrium evolution of the homogeneous background for non-vanishing initial charge densities and compute the Green*s functions for the charge current for initial charge perturbations around zero density on top of the background. By calculating the Green's functions, we show that only modes with long wavelength survive up into the hydrodynamic regime.