1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 81(3 Pt 1): 031123, 2010 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20365713
RESUMO
We study analytically and numerically the anomalous diffusion across periodically modulated parabolic potential within Langevin and Fokker-Planck descriptions. We find that the probability of particles passing over the saddle is affected strikingly by the periodical modulation with average zero bias. Particularly, the initial phase plays an important role in the modulation effect. The effect of the correlation time of external Ornstein-Uhlenbeck noise on dynamical process is also discussed. A reduction in overpassing probability is observed due to finite correlation time.