Influence of quark masses on the QCD phase diagram in the presence of a magnetic field

Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus–Nucleus Collisions 2012

Mizher, A.J.^1

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, México DF 04510, Mexico^1

关键词: Critical temperatures;    Lattice simulation;    Lattice spacing;    Magnetic-field intensity;    Model calculations;    Qcd phase diagrams;    Qualitative behavior;    Strong magnetic fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012016/pdf
DOI  :  10.1088/1742-6596/446/1/012016

来源: IOP

【 摘 要 】

The most recent lattice results on the QCD phase diagram in the presence of a strong magnetic field strongly disagree with results from previous lattice simulations and several model calculations. The most remarkable difference is the qualitative behavior of the critical temperature as a function of the magnetic field intensity, which in later results are shown to decrease in opposition to what was found previously. According to the authors, such a discrepancy in lattice simulations could be due to different lattice spacing, or different number of flavors and quark masses. We investigate the influence of quark masses on the Polyakov-Quark-Meson model and show that, although quantitatively the results are sensitive to those parameters, the qualitative behavior remains the same.