Asymptotic behavior of the probability density in one dimension
J. A. Damborenea, I. L. Egusquiza, Juan Gonzalo Muga · American Journal of Physics · 2002
We demonstrate that the probability density of a quantum state moving freely in one dimension may decay faster than t−1. The t−2 and t−3 dependencies are illustrated with analytically solvable examples. Decays faster than t−1 allow the existence of dwell times and delay times.