Periodic Modulation Induced Increase of Reaction Rates in Autocatalytic Systems

Details Periodic Modulation Induced Increase of Reaction Rates in Autocatalytic Systems Periodic Modulation Induced Increase of Reaction Rates in Autocatalytic Systems

1998-01-13

arxiv.org/abs/cond-mat/9801121v1

Physics

Condensed Matter

Submitted to J. Chem. Phys

Scientific paper

10.1063/1.476156

We propose a new mechanism to increase the reactions ratesin multistable autocatalytic systems. The mechanism is based upon the possibility for the enhancement of the response of the system due to the cooperative behavior between the noise and an external periodic modulation. In order to illustrate this feature we compute the reaction velocities for the particular case of the Sel'Kov model, showing that they increase significantly when the periodic modulation is introduced. This behavior originates from the existence of a minimum in the mean first passage time, one of the signatures of stochastic resonance.

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