Non-Markovian diffusion over a potential barrier in the
presence of periodic time modulation
Sergey V. Radionov
Monday, 20 February 2012, 13:30
Matfys library
Abstract:
The diffusive non-Markovian motion over a single-well potential barrier in
the presence of a weak sinusoidal time modulation is studied. We found
nonmonotonic dependence of the mean escape time from the barrier on a
frequency of the periodic modulation that is analogous to the stochastic
resonance phenomenon. The resonant increase of diffusion over the barrier
occurs at the frequency inversely proportional to the mean first-passage
time for the motion in the absence of the time modulation.