High Energy Theory Seminar

I will show how hydrodynamics is modified if the underlying fluid constituents are massless Weyl fermions, which are anomalous at the quantum level. Because of the non-dissipative nature of the modification I will construct a partition function which compactly describes the transport properties of the system and I will explain how the anomalous properties can be understood in terms of heat kernels and elucidate subtleties that show up. In the next step I will show how to move away from equilibrium for systems with anomalies and introduce information geometry and the Fisher-Rao metric in the parameter space, which is a useful tool to study systems close to thermal equilibrium. I will use it to calculate the transition points for chiral fermions. Finally I will comment on the potential utility of anomalies to study far-from-equilibrium phenomena such as turbulence.