We present our study of the QCD medium magnetic properties. We use Nf = 2 + 1 quark flavors QCD at the physical point, with Symanzik tree level improved gauge action and stout improved staggered fermions. We find that the strongly interacting matter behaves as a paramagnet in the range of temperatures (100 − 400) MeV, with a sharp increase of the magnetic susceptibiliy at the deconfinement crossover. For magnetic field values expected during off-central heavy ion collisions, we found that the magnetic contribution to the pressure can reach up to the 40% of the total pressure near the crossover transition. Finally we discuss preliminary results on higher order magnetic contributions to the free energy.
Magnetic properties of the QCD medium
Marco Mariti;Claudio Bonati;Massimo D'Elia;Michele Mesiti;
2015-01-01
Abstract
We present our study of the QCD medium magnetic properties. We use Nf = 2 + 1 quark flavors QCD at the physical point, with Symanzik tree level improved gauge action and stout improved staggered fermions. We find that the strongly interacting matter behaves as a paramagnet in the range of temperatures (100 − 400) MeV, with a sharp increase of the magnetic susceptibiliy at the deconfinement crossover. For magnetic field values expected during off-central heavy ion collisions, we found that the magnetic contribution to the pressure can reach up to the 40% of the total pressure near the crossover transition. Finally we discuss preliminary results on higher order magnetic contributions to the free energy.| File | Dimensione | Formato | |
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