Dice Question Streamline Icon: https://streamlinehq.com

Existence of a unified signal-response formula encompassing noise color, damping, and coupling

Determine whether a unified analytical signal-response formula exists that simultaneously accounts for noise color (e.g., Ornstein–Uhlenbeck correlation time), damping coefficients, and mean-field coupling in stochastic resonance of bistable systems.

Information Square Streamline Icon: https://streamlinehq.com

Background

The paper reviews fragmented theoretical work on stochastic resonance obtained under various assumptions (e.g., different noise types, coupling structures, and damping regimes) and highlights the lack of an overarching expression describing signal response across these settings. The authors set out to derive response formulas for multiple scenarios and investigate whether they can be reduced to a single, unified form.

References

Despite these findings, the theoretical explorations on SR are relatively fragmented. Whether there is a general response-noise formula embracing diverse factors, like noise color, damping coefficients and coupling, is still unknown.

Unified signal response for stochastic resonance in bistable systems (2502.20638 - Liu et al., 28 Feb 2025) in Introduction (Section 1)