Studying QGP with flow: A theory overview

Understand

I review recent developments in the phenomenological study of the quark-gluon plasma (QGP) transport properties based on a personal selection of results that were presented at Quark Matter 2019.

• The constraints on the temperature dependence of QGP shear and bulk viscosity are summarized.
• I discuss new theory advancements towards more realistic 3D dynamical simulations of heavy-ion collisions at finite baryon density.
• The challenges and opportunities of applying hydrodynamics to small collision systems are highlighted.