A Local Fluctuation Theorem

Abstract

The Fluctuation Theorem (FT) gives an analytic expression for the probability, in a nonequilibrium system of finite size observed for a finite time, that the dissipative flux will flow in the reverse direction to that required by the Second Law of Thermodynamics. In the present letter a Local version of the Fluctuation Theorem (LFT), is derived. We find that in the case of planar Poiseuille flow of a Newtonian fluid between thermostatted walls, nonequilibrium molecular dynamics simulation results support LFT. PACS numbers: 05.20.-y, 05.70.Ln, 47.10.+g, 47.40.-n Show more