Diffusion is perhaps the simplest possible transport process and has been studied for well over a century. In conventional many-body systems the diffusivity is determined by semiclassical single-particle concepts such as the mean free path. Modern physics — in fields including condensed matter physics, cold atomic physics, high energy physics and quantum information — is increasingly concerned with strongly quantum many-body systems that are far from semiclassical regimes. I will discuss several theoretical and experimental results that help us to think clearly about highly quantum diffusion.
Watch a recording of the talk (sorry, no slides).