The relaxation of a far from equilibrium anisotropic plasma
Univ. of Washington, Seattle
Mercredi 26/11/2008, 14:15
Salle Claude Itzykson, Bât. 774, Orme des Merisiers
Hydrodynamic simulations of heavy ion collisions at RHIC have demonstrated that the quark-gluon plasma produced is strongly coupled. The applicability of hydrodynamics suggests a very fast isotropization time of roughly 0.5 - 1 fm/c. Estimates of the isotropization time based on perturbative techniques are too large.
It is therefore desirable to understand the physics of fast isotropization in a strongly coupled plasma. Gauge/gravity duality provides a setting to study dynamics of strongly coupled supersymmetic Yang-Mills plasma. Using gauge/gravity duality, I will describe several toy models of the initial stages of heavy ion collisions. These toy models will allow for the study of relaxation times of non-hydrodynamic degrees of freedom in a strongly coupled and far from equilibrium setting and serve as stepping stones for more complicated models. I will present some preliminary results on the relaxation of a translationally invariant anisotropic plasma.
Contact : mcirelli