Hadron-Quark transition in the relativistic effective models framework: the QCD ph...
Mesonic fluctuations effects in the QCD phase diagram from effective models
Full text | |
Author(s): |
Farias, Ricardo L. S.
;
Timteo, Varese S.
;
Avancini, Sidney S.
;
Pinto, Marcus B.
;
Krein, Gasto
Total Authors: 5
|
Document type: | Journal article |
Source: | EUROPEAN PHYSICAL JOURNAL A; v. 53, n. 5 MAY 19 2017. |
Web of Science Citations: | 23 |
Abstract | |
The phenomenon of inverse magnetic catalysis of chiral symmetry in QCD predicted by lattice simulations can be reproduced within the Nambu-Jona-Lasinio model if the coupling G of the model decreases with the strength B of the magnetic field and temperature T. The thermo-magnetic dependence of G(B, T) is obtained by fitting recent lattice QCD predictions for the chiral transition order parameter. Different thermodynamic quantities of magnetized quark matter evaluated with G(B, T) are compared with the ones obtained at constant coupling, G. The model with G(B, T) predicts a more dramatic chiral transition as the field intensity increases. In addition, the pressure and magnetization always increase with B for a given temperature. Being parametrized by four magnetic-field-dependent coefficients and having a rather simple exponential thermal dependence our accurate ansatz for the coupling constant can be easily implemented to improve typical model applications to magnetized quark matter. (AU) | |
FAPESP's process: | 13/01907-0 - São Paulo Research and Analysis Center |
Grantee: | Sergio Ferraz Novaes |
Support Opportunities: | Research Projects - Thematic Grants |
FAPESP's process: | 16/07061-3 - Effective theories in few- and many-body hadronic systems |
Grantee: | Varese Salvador Timoteo |
Support Opportunities: | Regular Research Grants |