XIII International Workshop on Hadron Physics - XIII Hadron Physics

Impact of a magnetic field on the thermodynamics of magnetized quark matter

Not scheduled

3h 30m

Hotel do Bosque

Poster Field theoretical approaches to QCD

Speaker

Prof. Ricardo L.S. Farias (UFSM)

Description

Motivated by the fact that strong magnetic fields $B$ may be produced in noncentral heavy-ion collisions, investigations of the effects of $B$ on the phase diagram of strongly interacting matter became a subject of great interest in recent years. Results from lattice QCD simulations show that the pseudo critical temperature $T_{\rm pc}$ for chiral-symmetry restoration decreases with $B$, a phenomenon known as inverse magnetic catalysis (IMC); but $T_{\rm pc}$ increases with $B$ for unrealistically large values of pion masses. The decrease of $T_{\rm pc}$ with $B$ is in disagreement with effective models like the linear sigma model and the Nambu--Jona-Lasinio (NJL) model. Motivated by a recent work employing a NJL model with a coupling constant dependent on temperature and magnetic field, $G(eB,T)$, we reexamine the effects of a magnetic field on the thermodynamic quantities like pressure, entropy, specific heat, and trace anomaly.