dc.creatorRozenfeld, Alejandro Fabián
dc.creatorTessone, Claudio Juan
dc.creatorAlbano, Ezequiel Vicente
dc.creatorWio, Horacio S.
dc.date2001-02
dc.date2021-12-13T17:03:37Z
dc.date.accessioned2023-07-15T04:16:03Z
dc.date.available2023-07-15T04:16:03Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/129520
dc.identifierissn:0375-9601
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7468894
dc.descriptionNoise 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.descriptionFacultad de Ciencias Exactas
dc.descriptionInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
dc.descriptionInstituto de Física La Plata
dc.formatapplication/pdf
dc.format45-52
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectCiencias Exactas
dc.subjectFísica
dc.subjectnoise
dc.subjectspectral amplification factor
dc.subjectpower spectrum density
dc.titleOn 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.typeArticulo
dc.typeArticulo


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