Aug 2 – 6, 2021
Europe/Brussels timezone

Fermion and gluon spectral functions far from equilibrium

Aug 2, 2021, 5:30 PM


Parallel contribution D: Deconfinement Parallels Track D


Kirill Boguslavski (TU Wien, Austria)


Motivated by the quark-gluon plasma, we develop a simulation method to obtain the spectral function of (Wilson) fermions non-perturbatively in a non-Abelian gauge theory with large gluon occupation numbers. We apply our method to a non-Abelian plasma close to its non-thermal fixed point, i.e., in a far-from-equilibrium self-similar regime, and find mostly very good agreement with perturbative hard loop (HTL) calculations. For the first time, we extract the full momentum dependence of the damping rate of fermionic collective excitations and compare our results to recent non-perturbative extractions of gluonic spectral functions in two and three spatial dimensions.

Primary authors

Kirill Boguslavski (TU Wien, Austria) Tuomas Lappi (University of Jyvaskyla) Soeren Schlichting (Universität Bielefeld)

Presentation materials