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Electrical Conductivity of Hot QCD Matter
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We study the electric conductivity of hot QCD matter at various temperatures T within the off-shell parton-hadron-string dynamics transport approach for interacting partonic, hadronic or mixed systems in a finite box with periodic boundary conditions. The response of the strongly interacting system in equilibrium to an external electric field defines the electric conductivity sigma_0. We find a sizable temperature dependence of the ratio sigma_0/T well in line with calculations in a relaxation time approach for Tc<T<2.5Tc. The ratio drops in the hadronic phase with T, shows a minimum close to Tc, and becomes approximately constant (~0.3) above ~5Tc. Our findings imply that the QCD matter even at T=Tc is a much better electric conductor than Cu or Ag (at room temperature).
Forward citations
Cited by 2 Pith papers
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Soft mode dynamics associated with QCD critical point and color superconductivity -- pseudogap, anomalous dilepton production and electric conductivity
Soft modes tied to the QCD critical point and color superconductivity create a pseudogap in quark spectra and boost electric conductivity plus dilepton production above the transition temperatures.
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The influence of electromagnetic fields on the generation of the directed and elliptic flows of heavy quark in relativistic heavy-ion collisions
In the PHSD transport model, self-generated electromagnetic fields induce a D meson v1 splitting consistent with STAR within large uncertainties, and a more visible v1 splitting versus pT for charm quarks.
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