Fig. 4
From: Wignerian symplectic covariance approach to the interaction-time problem

The Wigner–Shannon entropy (a) and Wigner–Rényi one-half entropy (b) of the WDF state over time. Different colors stand for different potential switching times \(t_{\textrm{s}}\) and the black dash-dotted line corresponds to the case of time-independent potential barrier.