6533b86efe1ef96bd12cbee4
RESEARCH PRODUCT
Two-flavour lattice QCD correlation functions in the deconfinement transition region
Hartmut WittigBastian B. BrandtAnthony FrancisHarvey B. Meyersubject
Quantum chromodynamicsPhysicsSpectral representationNuclear TheoryCondensed matter physicsHigh Energy Physics::LatticeLattice field theoryFlavourHigh Energy Physics - Lattice (hep-lat)FOS: Physical sciencesLattice QCDDeconfinementNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)Color confinementdescription
We report on a lattice QCD calculation with two dynamical flavors of the isovector vector correlator in the high-temperature phase. We analyze the correlator in terms of the associated spectral function by performing a fit for the difference of the thermal and vacuum spectral functions, using also an exact sum rule that constrains this difference. Additonally we carry out a direct fit for the thermal spectral function, and obtain good agreement between the two analyses for frequencies below the two-pion threshold. Under the assumption that the spectral function is smooth in that region, we give an estimate of the electrical conductivity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-02-04 |