| Texto completo | |
| Autor(es): |
Rocha, Gabriel S.
;
Ferreira, Mauricio N.
;
Denicol, Gabriel S.
;
Noronha, Jorge
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 106, n. 3, p. 13-pg., 2022-08-23. |
| Resumo | |
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) | |
| Processo FAPESP: | 17/05685-2 - Física hadrônica em colisões nucleares de altas energias |
| Beneficiário: | Jun Takahashi |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 20/12795-1 - Evolução do tensor energia momento durante a fase de pré-equilíbrio de uma colisão de íons pesados |
| Beneficiário: | Antonio Maurício Soares Narciso Ferreira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |