Quarkhadron phase structure, thermodynamics and magnetization of QCD matter
Abstract
SU($3$) Polyakov linearsigma model (PLSM) is systematically implemented to characterize the quarkhadron phase structure and to determine various thermodynamic quantities and magnetization of the QCD matter. In meanfield approximation, the dependence of the chiral orderparameter on finite magnetic field is also calculated. In a wide range of temperatures and magnetic field strengths, various thermodynamic quantities including trace anomaly, speed of sound squared, entropy density, specific heat are presented and some magnetic properties are described, as well. Wherever available these results are confronted to recent lattice QCD calculations. The temperature dependence of these quantities confirms our previous result that the transition temperature is reduced with the increase in the magnetic field strength, i.e. QCD matter is to be characterized by an inverse magnetic catalysis. Furthermore, the temperature dependence of the magnetization shows that the conclusion that the QCD matter has paramagnetic properties slightly below and far above the pseudocritical temperature, is confirmed, as well. The excellent agreement with recent lattice calculations proves that our QCDlike approach (PLSM) seems to possess the correct degreesoffreedom in both hadronic and partonic phases and describes well the dynamics deriving confined hadrons to deconfined quarkgluon plasma.
 Publication:

arXiv eprints
 Pub Date:
 April 2016
 arXiv:
 arXiv:1604.08174
 Bibcode:
 2016arXiv160408174N
 Keywords:

 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology;
 High Energy Physics  Theory
 EPrint:
 38 pages, 8 figures, 2 tables accepted for publication in J. Phys. G