| dc.creator | Rozenfeld, Alejandro Fabián | |
| dc.creator | Tessone, Claudio Juan | |
| dc.creator | Albano, Ezequiel Vicente | |
| dc.creator | Wio, Horacio S. | |
| dc.date | 2001-02 | |
| dc.date | 2021-12-13T17:03:37Z | |
| dc.date.accessioned | 2023-07-15T04:16:03Z | |
| dc.date.available | 2023-07-15T04:16:03Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/129520 | |
| dc.identifier | issn:0375-9601 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7468894 | |
| dc.description | Noise induced changes in the critical and oscillatory behavior of a Prey-Predator system are studied using power spectrum density and Spectral Amplification Factor (SAF) analysis. In the absence of external noise, the population densities exhibit three kinds of asymptotic behavior, namely: Absorbing State, Fixed Point (FP) and an Oscillatory Regime (OR) with a well defined proper (natural) frequency. The addition of noise destabilizes the FP phase inducing a transition to a new OR. Surprisingly, it is found that when a periodic signal is added to the control parameter, the system responds robustly, without relevant changes in its behavior. Nevertheless, the "Coherent Stochastic Resonance" phenomenon is found only at the proper frequency. Also, a method based on SAF allows us to locate very accurately the transition points between the different regimes. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.description | Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas | |
| dc.description | Instituto de Física La Plata | |
| dc.format | application/pdf | |
| dc.format | 45-52 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Física | |
| dc.subject | noise | |
| dc.subject | spectral amplification factor | |
| dc.subject | power spectrum density | |
| dc.title | On the influence of noise on the critical and oscillatory behavior of a predator–prey model: coherent stochastic resonance at the proper frequency of the system | |
| dc.type | Articulo | |
| dc.type | Articulo | |
