Prof. Mukund Rangamani
Hydrodynamics is a rather old subject, but in the last few years we have seen enormous progress in understanding some of the theoretical underpinnings of the subject. I will explain how the standard axioms of the phenomenological theory can be explicitly solved for allowed forms of transport. The solution reveals some interesting hidden symmetries which we will explain from a microscopic perspective. We shall see that the effective field theory of non-linear dissipative fluids is described in terms of a novel topological sigma model.