Emissivity and conductivity of parton-hadron matter
1 Institut für Theoretische Physik, Universität Giessen, 35392 Giessen, Germany
2 Institut für Theoretische Physik, Johann Wolfgang Goethe Universität, 60438 Frankfurt am Main, Germany Frankfurt Institute for Advanced Studies, 60438 Frankfurt am Main, Germany
3 SUBATECH, UMR 6457, Laboratoire de Physique Subatomique et des Technologies Associées, University of Nantes - IN2P3/CNRS - Ecole des Mines de Nantes, 44072 Nantes Cedex 03, France
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Published online: 20 March 2014
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 ν2 of direct photons.
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