| Full text | |
| Author(s): |
Rocha, Gabriel S.
;
Ferreira, Mauricio N.
;
Denicol, Gabriel S.
;
Noronha, Jorge
Total Authors: 4
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 106, n. 3, p. 13-pg., 2022-08-23. |
| Abstract | |
We investigate the transport properties of a kinetic theory model that is tuned to describe the thermodynamic properties of QCD at zero chemical potential using a new formulation of the relaxation time approximation. In contrast to previous approaches, the latter is constructed to preserve the fundamental properties of the collision term of the Boltzmann equation for any energy dependence of the relaxation time. A novel choice of matching conditions is implemented to ensure that the background mean-field depends only on the temperature even when the system is out of equilibrium. We provide a consistent analysis of how the transport coefficients of relativistic Navier-Stokes theory vary with the energy dependence of the relaxation time. We also show that the entropy production of this theory is consistent with the second law of thermodynamics and verify that it is independent of the matching conditions employed. We used this fact to calculate the matching independent combination of transport coefficients. (AU) | |
| FAPESP's process: | 17/05685-2 - Hadronic physics in high energy nuclear collisions |
| Grantee: | Jun Takahashi |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 20/12795-1 - Evolution of the energy-momentum tensor during the pre-equilibrium phase of a heavy-ion collision |
| Grantee: | Antonio Maurício Soares Narciso Ferreira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |