Absence of dissipation in trajectory ensembles biased by currents

摘要: We consider biased ensembles of trajectories associated with large deviations currents in equilibrium systems. The are characterised by non-zero and lack the time-reversal symmetry state. In cases where system has an inversion which is broken bias, we show that retain a generalised symmetry, involving spatial transformation inverts current. This means these dissipation. Hence, they differ significantly from non-equilibrium steady states induced external forces. One consequence this result maximum entropy assumptions (MaxEnt/MaxCal), widely used for modelling thermal systems away equilibrium, have quite unexpected implications, including apparent superfluid behaviour classical model shear flow.