6533b821fe1ef96bd127ae42
RESEARCH PRODUCT
Spectral function for overoccupied gluodynamics from real-time lattice simulations
Kirill BoguslavskiAleksi KurkelaAleksi KurkelaTuomas LappiTuomas LappiJarkko Peuronsubject
CLASSICAL APPROXIMATIONNuclear Theorynucl-thquark-gluon plasmahep-latFOS: Physical sciencesHEAVY-ION COLLISIONShiukkasfysiikka114 Physical sciences01 natural sciencesNuclear Theory (nucl-th)High Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)0103 physical sciencesquantum chromodynamicsQCD PLASMA INSTABILITIESStatistical physicsGauge theorynonperturbative effects in field theory010306 general physicsHARD THERMAL LOOPSParticle Physics - PhenomenologyPhysicsQuantum chromodynamicsta114010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)kvarkki-gluoniplasmafinite temperature field theorylattice field theoryISOTROPIZATIONParticle Physics - Latticehep-ph16. Peace & justiceFIELD-THEORYGluonHigh Energy Physics - PhenomenologyNuclear Physics - TheoryQuark–gluon plasmaHIGH-TEMPERATUREGAUGE-THEORIESQuasiparticleSpectral functionkvanttikenttäteoriaStatistical correlationrelativistic heavy-ion collisionsdescription
We study the spectral properties of a highly occupied non-Abelian non-equilibrium plasma appearing ubiquitously in weak coupling descriptions of QCD matter. The spectral function of this far-from-equilibrium plasma is measured by employing linear response theory in classical-statistical real-time lattice Yang-Mills simulations. We establish the existence of transversely and longitudinally polarized quasiparticles and obtain their dispersion relations, effective mass, plasmon frequency, damping rate and further structures in the spectral and statistical functions. Our new method can be interpreted as a non-perturbative generalization of hard thermal loop (HTL) effective theory. We see indications that our results approach leading order HTL in the appropriate limit. The method can also be employed beyond the range of validity of HTL.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-06 |