Fig. 12: Total gain and phase shift of the respective compositions of operators in GLE and AM.

Expressed as a function of τ^r/τ^m and calculated for ωτ^m = 1. Colored regions indicate different regimes of interest: negative τ^r (orange), effectively retrospective (τ^r < τ^m, blue), effectively prospective (τ^r >  τ^m, red).