Fermion and gluon spectral functions far from equilibrium

Motivated by the quark-gluon plasma, we develop a simulation method to obtain spectral function of (Wilson) fermions non-perturbatively in non-Abelian gauge theory with large gluon occupation numbers [arXiv:2106.11319]. We apply our plasma close its non-thermal fixed point, i.e., far-from-equilibrium self-similar regime, and find mostly very good agreement perturbative hard loop (HTL) calculations. For first time, extract full momentum dependence damping rate fermionic collective excitations compare results recent non-perturbative extractions gluonic functions two three spatial dimensions [arXiv:2101.02715, arXiv:1804.01966].