Abstract
We investigate the properties of the QCD matter across the deconfinement phase transition. In the scope of the parton-hadron string dynamics (PHSD) transport approach, we study the strongly interacting matter in equilibrium as well as the out-of equilibrium dynamics of relativistic heavy-ion collisions. We present here in particular the results on the electromagnetic radiation, i.e. photon and dilepton production, in relativistic heavy-ion collisions and the relevant correlator in equilibrium, i.e. the electric conductivity. By comparing our calculations for the heavy-ion collisions to the available data, we determine the relative importance of the various production sources and address the possible origin of the observed strong elliptic flow $v_2$ of direct photons.
Highlights
We investigate the properties of the QCD matter across the deconfinement phase transition
We have investigated the spectra and elliptic flow of dileptons and photons from relativistic heavy-ion collisions in the scope of the covariant transport approach Parton-Hadron String Dynamics (PHSD) in Refs. [7,8,9,10,11]
The two-particle correlations resulting from the finite width of the parton spectral functions are taken into account dynamically in the parton-hadron string dynamics (PHSD) by means of the generalized off-shell transport equations [14] that go beyond the mean field or Boltzmann approximation [15]
Summary
We investigate the properties of the QCD matter across the deconfinement phase transition. We have investigated the spectra and elliptic flow of dileptons and photons from relativistic heavy-ion collisions in the scope of the covariant transport approach Parton-Hadron String Dynamics (PHSD) in Refs. The electric conductivity of hot QCD matter at various temperatures T was studied within the PHSD approach for interacting partonic/hadronic systems in a finite box with periodic boundary conditions in Ref.
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