Fig. 5: ACF of a composite function.
From: Convergence and equilibrium in molecular dynamics simulations
a shows the decorrelation vs the observation time, in a log-log scale. b shows the composite function being analyzed, f(x) = A − A ⋅ exp( − B ⋅ t) + sin(C ⋅ t) + sin(D ⋅ t) + sin(E ⋅ t) (see text for specific value of coefficients), with a zoomed-in region that displays the high-frequency sine component.
