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.
Primary author
Prof.
Ricardo L.S. Farias
(UFSM)
Co-authors
Prof.
Gastao I. Krein
(IFT - UNESP)
Prof.
Marcus B. Pinto
(UFSC)
Prof.
Sidney Avancini
(UFSC)
Prof.
Varese S. Timoteo
(Unicamp)
