Stochastic Resonance due to Thermally induced Noise in a Bistable Potential
| dc.contributor.advisor | Bekele, Mulugeta (PhD) | |
| dc.contributor.author | Jemama, Bekele | |
| dc.date.accessioned | 2018-06-19T12:14:41Z | |
| dc.date.accessioned | 2023-11-09T11:27:40Z | |
| dc.date.available | 2018-06-19T12:14:41Z | |
| dc.date.available | 2023-11-09T11:27:40Z | |
| dc.date.issued | 2007-07 | |
| dc.description.abstract | Stochastic resonance is an essentially nonlinear phenomenon, requiring the presence of an energetic activation barrier, a weak coherent input signal and a source of noise whereby generally feeble input information such as a weak signal can be ampli¯ed and optimized by the assistance of noise. In order to study this phenomenon, we propose a model which enable us to convert a monostable potential to a bistable one through a mechanism called belowtorch e®ect. Having successfully estabilshed the bistable potential, we consider motion of a Brownian particle subjected to random force de- scribing noise and weak periodic force in a highly viscous non-homogenous medium and the bistable potential with spatially varying background temperature. We use a numerical technique to compute some of the observables (such as signal-to-noise-ratio and spectral ampli¯cation) that are actually used to quantify stochastic resonance. The result shows that the response of the system undergoes resonance-like behavior as a function of hot temperature. The existence of this resonance-like behavior is still the identifying characteristic of the stochastic resonance phenomenon | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/1716 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Stochastic Resonance due to Thermally | en_US |
| dc.title | Stochastic Resonance due to Thermally induced Noise in a Bistable Potential | en_US |
| dc.type | Thesis | en_US |