Diffusive Hydrodynamics from Long-Range Correlations

Author(s): Friedrich Hübner, Leonardo Biagetti, Jacopo De Nardis, and Benjamin Doyon In the hydrodynamic theory, the nonequilibrium dynamics of a many-body system is approximated, at large scales of space and time, by irreversible relaxation to local entropy maximization. This results in a convective equation corrected by viscous or diffusive terms in a gradient expansion, such as t… [Phys. Rev. Lett. 134, 187101] Published Fri May 09, 2025