Generalized hydrodynamics and hydrodynamization in ultracold 1D gases

Marcos Rigol (Penn. State)
Generalized hydrodynamics and hydrodynamization in ultracold 1D gases
Generalized hydrodynamics and hydrodynamization in ultracold 1D gases
Experiments with nearly-integrable ultracold one-dimensional quantum
gases have probed integrability preserving dynamics involving large distances
and long times, testing the recently proposed theory of generalized
hydrodynamics [1]. Using "high-energy" quenches implemented via a Bragg
scattering pulse, the experiments have also unveiled fast local equilibration
at the shortest available time scales, a process known as hydrodynamization in
the context of relativistic heavy-ion collisions [2]. I will discuss the
experimental results and their theoretical understanding and modeling. For
hydrodynamization, I will argue that integrability provides a theoretical
framework from which one can draw a general picture that is expected to apply
to nonintegrable systems.