6533b835fe1ef96bd129f6ec
RESEARCH PRODUCT
Static and non-static vector screening masses
Kai ZappBastian B. BrandtAnthony FrancisHarvey B. MeyerAman Steinbergsubject
Length scalePhysicsQuantum chromodynamicsHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)High Energy Physics::PhenomenologyLattice field theoryFOS: Physical sciencesMatsubara frequencyLattice QCDHigh Energy Physics - LatticeLattice (order)Quantum electrodynamicsPerturbation theory (quantum mechanics)Mass screeningdescription
Thermal screening masses of the conserved vector current are calculated both in a weak-coupling approach and in lattice QCD. The inverse of a screening mass can be understood as the length scale over which an external electric field is screened in a QCD medium. The comparison of screening masses both in the zero and non-zero Matsubara frequency sectors shows good agreement of the perturbative and the lattice results. Moreover, at $T\approx 508\mathrm{MeV}$ the lightest screening mass lies above the free result ($2\pi T$), in agreement with the $\mathcal{O}(g^2)$ weak-coupling prediction.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-29 |