Speaker
Michael Winn
(Ruprecht-Karls-Universitaet Heidelberg (DE))
Description
We investigate the impact of interactions in the hadron resonance gas (HRG) modelled by a volume assigned to the hadrons in a thermodynamically consistent way. We discuss the influence of the hadron radius, a parameter of the model, on thermodynamic quantities as energy density, entropy density and pressure. The consideration of interactions is followed by us arguing that the commonly used free HRG is not an appropriate description in the dense environment near the phase boundary/rapid cross-over and shows in this region clear signs of the Hagedorn divergence. This is tamed in our model including interactions, so that we associate the strong rise of the thermodynamic quantities observed in recent lattice quantum chromodynamics calculations with deconfinement.
Authors
Anton Andronic
(GSI Research Division and ExtreMe Matter Institue EMMI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Johanna Stachel
(Ruprecht-Karls-Universitaet Heidelberg (DE))
Michael Winn
(Ruprecht-Karls-Universitaet Heidelberg (DE))
Peter Braun-Munzinger
(GSI Research Division and ExtreMe Matter Institue EMMI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE), Technische Universitaet Darmstadt (DE), Frankfurt Institute for Advanced Studies - Goethe University (DE))
