QGP time formation in holographic shock waves model of heavy ion collisions

Understand

We estimate the thermalization time in two colliding shock waves holographic model of heavy-ion collisions.

• For this purpose we model the process by the Vaidya metric with a horizon defined by the trapped surface location.
• We consider two bottom-up AdS/QCD models that give, within the colliding shock waves approach, the dependence of multiplicity on the energy compatible with RHIC and LHC results.
• One model is a bottom-up AdS/QCD confining model and the other is related to an anisotropic thermalization.