A review of a Schwinger-Keldysh effective action for hydrodynamics [30 min talk on action formulations of hydro with a subsequent discussion led by Amos]
Amos Yarom speaking at the BIRS workshop 19w5048: Theoretical Foundations of Relativistic Hydrodynamics (Nov 24 - Nov 29). Recorded by the Banff International Research Station for Mathematical Innovation and Discovery.