Diffusion in generalized hydrodynamics and quasiparticle scattering
Diffusion in generalized hydrodynamics and quasiparticle scattering
We extend beyond the Euler scales the hydrodynamic theory for quantum and classical integrable models developed in recent years, accounting for diffusive dynamics and local entropy production. We review how the diffusive scale can be reached via a gradient expansion of the expectation values of the conserved fields and how …