Speaker
Description
The 60th birthdays of two major contributors to our present understanding of collective dynamics of hot QCD matter in relativistic heavy-ion collisions are an opportunity for us to look back how this understanding was achieved. Appropriately, I will focus on relativistic kinetic transport theory and fluid dynamics where Dirk and Carsten left their deepest permanent footprints. The talk will build up to a recent development in my own group, Maximum Entropy Hydrodynamics, that aims to extend the applicability of both types of approaches into the far-off-equilibrium domain that is being probed in high-energy collisions between small nuclei as well as during the early evolution stages of the matter created in collisions between large nuclei. Some open questions for the second 60 years of Carsten's and Dirk's careers will be briefly addressed.