Artículos de revistas
Nonlinear waves in a quark gluon plasma
Fecha
2010Registro en:
PHYSICAL REVIEW C, v.81, n.5, 2010
0556-2813
10.1103/PhysRevC.81.055211
Autor
Fogaça, David Augaitis
Ferreira Filho, Luiz Gonzaga
Navarra, Fernando Silveira
Institución
Resumen
We study the propagation of perturbations in the quark gluon plasma. This subject has been addressed in other works and in most of the theoretical descriptions of this phenomenon the hydrodynamic equations have been linearized for simplicity. We propose an alternative approach, also based on hydrodynamics but taking into account the nonlinear terms of the equations. We show that these terms may lead to localized waves or even solitons. We use a simple equation of state for the QGP and expand the hydrodynamic equations around equilibrium configurations. The resulting differential equations describe the propagation of perturbations in the energy density. We solve them numerically and find that localized perturbations can propagate for long distances in the plasma. Under certain conditions our solutions mimic the propagation of Korteweg-de Vries solitons.