| Texto completo | |
| Autor(es): |
Nastase, Horatiu
Número total de Autores: 1
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| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 94, n. 2, p. 10-pg., 2016-07-08. |
| Resumo | |
Away to describe the hydrodynamics of the quark-gluon plasma using a Dirac-Born-Infeld (DBI) action is proposed, based on the model found by Heisenberg for high energy scattering of nucleons. The expanding plasma is described as a shockwave in a DBI model for a real scalar standing in for the pion, and I show that one obtains a fluid description in terms of a relativistic fluid that near the shock is approximately ideal (eta similar or equal to 0) and conformal. One can introduce an extra term inside the square root of the DBI action that generates a shear viscosity term in the energy-momentum tensor near the shock, as well as a bulk viscosity, and regulates the behavior of the energy density at the shock, making it finite. The resulting fluid satisfies the relativistic Navier-Stokes equation with u(mu), rho, P, eta defined in terms of phi and its derivatives. One finds a relation between the parameters of the theory and the quark-gluon plasma thermodynamics, alpha/beta(2) = eta/(sT)and by fixing alpha and beta from usual (low multiplicity) particle scattering, one finds T proportional to m(pi). (AU) | |
| Processo FAPESP: | 14/18634-9 - Dualidade gravitação/Teoria de Gauge |
| Beneficiário: | Victor de Oliveira Rivelles |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |