Collisions in Non-conformal Theories: Hydrodynamization without Equilibration

by maximilian attems (University of Barcelona)

Friday 20 May 2016, 11:00 → 12:00 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Ever since fast hydrodynamization has been demonstrated in heavy ion collisions the understanding of the very early non-equilbrium stage of such collisions has been a topic of intense research. We use the gauge/string duality to model the creation of a strongly coupled
Quark-Gluon plasma in a non-conformal gauge theory. The non-trivial equation of state and the presence of a time-dependent bulk viscosity change the evolution of planar shockwaves. Non-conformality gives rise to an increase of the relaxation times of the resulting plasma.
Furthermore, if the bulk viscosity is large enough then the plasma becomes well described by hydrodynamics before the equilibrium equation of state becomes applicable.