Aug 2 – 6, 2021
Europe/Brussels timezone

Non-equilibrium attractor in high-temperature QCD plasmas

Aug 2, 2021, 5:00 PM


Parallel contribution D: Deconfinement Parallels Track D


Dekrayat Almaalol (Kent State University)


We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultra-relativistic nuclear collisions.

Primary authors

Aleksi Kurkela (CERN and Univ. Stavanger) Dekrayat Almaalol (Kent State University) Michael Strickland (Kent State University)

Presentation materials