Symmetry properties of fluctuations in an actively driven rotor

Li He^{1, †}, Yang Xiang¹, Zhang Hepeng^{1, 2, ‡}

(a)Detailed fluctuation relation of total entropy production Δ S_tot for different trajectory length nτ. Colors and markers shapes present time lengths of trajectories (dark blue squares: nτ = 2 s, light blue circles: nτ = 4 s, green diamonds: nτ = 6 s, red daggers: nτ = 8 s). (b) Probability distribution functions of total entropy production Δ S_tot (nτ = 6 s). (c) Total entropy production Δ S_tot versus angular displacement Δθ. Data are divided by nτ for the convenience of comparison. Corresponding simulation results are presented in (d)–(f).