2017/10/05 by Daniel de las Heras, Matthias Schmidt · 1 citation
Physics and Astronomy · #cond-mat.soft #physics.flu-dyn
paper · pdf · doi:10.1103/physrevlett.120.028001
published as Phys. Rev. Lett. 120, 028001, (2018)
arxiv created 2017/10/05 · arxiv updated 2018/02/26
We present an explicit and simple approximation for the superadiabatic excess (over ideal gas) free power functional, admitting the study of the nonequilibrium dynamics of overdamped Brownian many-body systems. The functional depends on the local velocity gradient and is systematically obtained from treating the microscopic stress distribution as a conjugate field. The resulting superadiabatic forces are beyond dynamical density functional theory and are of viscous nature. Their high accuracy is demonstrated by comparison to simulation results.