6533b82ffe1ef96bd12951be
RESEARCH PRODUCT
Plasmon mass scale in classical nonequilibrium gauge theory
Jarkko PeuronTuomas Lappisubject
Nuclear TheoryFOS: Physical sciencesplasmon massHEAVY-ION COLLISIONS114 Physical sciences01 natural sciencesNuclear Theory (nucl-th)symbols.namesakeHigh Energy Physics - Phenomenology (hep-ph)INSTABILITIESHigh Energy Physics - LatticeElectric fieldDispersion relationQuantum mechanics0103 physical sciencesGauge theory010306 general physicsPlasmonYang-Mills theoryDebyePhysicsta114010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)ISOTROPIZATIONMagnetic fieldLattice (module)High Energy Physics - PhenomenologysymbolsQuasiparticledescription
Classical lattice Yang-Mills calculations provide a good way to understand different nonequilibrium phenomena in nonperturbatively overoccupied systems. Above the Debye scale the classical theory can be matched smoothly to kinetic theory. The aim of this work is to study the limits of this quasiparticle picture by determining the plasmon mass in classical real time Yang-Mills theory on a lattice in 3 spatial dimensions. We compare three methods to determine the plasmon mass: a hard thermal loop expression in terms of the particle distribution, an effective dispersion relation constructed from fields and their time derivatives, and by measuring oscillations between electric and magnetic field modes after artificially introducing a homogeneous color electric field. We find that a version of the dispersion relation that uses electric fields and their time derivatives agrees with the other methods within 50%.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-25 |