Nontrivial stochastic resonance temperature for the kinetic Ising model
Kwan-tai Leung, Zoltan Neda (Academia Sinica, Institute of Physics,, Taiwan)
TL;DR
This paper investigates stochastic resonance in the kinetic Ising model, revealing a nontrivial resonance temperature above T_c where the signal-to-noise ratio peaks, linked to the vanishing of the kinetic coefficient.
Contribution
It identifies a nontrivial stochastic resonance temperature in the kinetic Ising model and relates it to the kinetic coefficient's behavior at T_c, supported by simulations and theoretical comparisons.
Findings
Peak in signal-to-noise ratio above T_c
Resonance temperature linked to kinetic coefficient vanishing
Consistent results across different dimensions
Abstract
The kinetic Ising model in a weak oscillating magnetic field is studied in the context of stochastic resonance. The signal-to-noise ratio calculated with simulations is found to peak at a nontrivial resonance temperature above the equilibrium critical temperature T_c. We argue that its appearance is closely related to the vanishing of the kinetic coefficient at T_c. Comparisons with various theoretical results in one and higher dimensions are made.
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