Comment on "mean first passage time for anomalous diffusion".
We correct a previously erroneous calculation [Phys. Rev. E 62, 6065 (2000)] of the mean first passage time of a subdiffusive process to reach either end of a finite interval in one dimension. The mean first passage time is in fact infinite.
Yuste
S B
SB
Departamento de Física, Universidad de Extremadura, E-06071, Badajoz, Spain.
Lindenberg
Katja
K