FIG. 2.

The mean displacement $〈x\left(t\right)〉$ as a function of time for several values of the dead-end length L (the values of L, in dimensionless units, are given near the curves). Other parameters, in dimensionless units, are v = 100, R = l = D₀ = D_de = 1, and a = 0.1. The dependences were obtained by numerically inverting the Laplace transforms in Eqs. (3.1) and (3.9) in the normal and anomalous regimes, respectively. The inset shows the mean displacement at short times, where all the curves with L≠0 collapse to the same curve since the particle is ”unaware” about the length of the dead ends on these times.