6533b82dfe1ef96bd1290aed
RESEARCH PRODUCT
Fermion and gluon spectral functions far from equilibrium
Soeren SchlichtingTuomas LappiKirill Boguslavskisubject
Nuclear Theory010308 nuclear & particles physicsPhysicsQC1-999High Energy Physics::LatticeHigh Energy Physics::PhenomenologyHigh Energy Physics - Lattice (hep-lat)FOS: Physical scienceshiukkasfysiikka7. Clean energy01 natural sciencesNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Lattice0103 physical sciences010306 general physicsdescription
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 [arXiv:2106.11319]. 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 [arXiv:2101.02715, arXiv:1804.01966].
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 |