Stochastic resonance linear response theory

In Section II.B the fluctuations and fluctuational transitions in an OB system subject to white noise are analyzed. In Section II.C the phenomenon of stochastic resonance in the OB system is discussed in terms of linear response theory and the corresponding experimental results are presented. In Section II.D we discuss theory and experimental results for the new form of optical heterodyning noise-protected with stochastic resonance. Finally, Section II.E contains concluding remarks. 

The idea of the magnetic stochastic resonance has emerged in a natural way first as a theoretical issue [25-27] and shortly afterward was supported by some experimental evidence [28,31]. A consistent theoretical treatment of magnetic SR in a superparamagnetic particle in the framework of the linear response theory was developed in Refs. 29 and 30. 

Casado-Pascual, J., Denk, C., Gomez-Ordonez, J., Morillo, M. Hanggi P. (2003). Gain in stochastic resonance precise numerics versus linear response theory beyond the two-model approximation, Phys. Rev. E, vol. 67, 036109. 

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