| Issue |
EPL
Volume 82, Number 5, June 2008
|
|
|---|---|---|
| Article Number | 50004 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/82/50004 | |
| Published online | 27 May 2008 | |
Resonant activation: Potential vs. temperature fluctuations
Institute of Physics, Nicolaus Copernicus University - Grudziądzka 5, 87-100 Toruń, Poland, EU
Corresponding author: jiwanisz@phys.uni.torun.pl
Received:
29
January
2008
Accepted:
10
April
2008
The thermal activation over a potential barrier in a stochastically modified system is analyzed. If colored noise perturbs the potential one can observe the famous resonant activation phenomenon. We compare this effect with the results caused by correlated fluctuations of the temperature. For high potential barrier stochastic variations of temperature lead to resonant activation as well. However, for low-barrier or barrierless evolution this effect disappears. We formulate an analytical condition separating these cases and present a physical interpretation of both types of behavior.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 02.50.Ey – Stochastic processes / 82.20.Uv – Stochastic theories of rate constants
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.