講演者：Prof. Hartmut Benner (TU Darmstadt)
講演題目： Noise-Free Stochastic Resonance in Spin-Wave Chaos and Electronic Circuits
Stochastic resonance, introduced two decades ago as a model for geophysical dynamics, has recently found its way into such diverse fields as physics, meteorology, chemistry, and biology. The rising interest in this field stems from the counterintuitive effect that a periodic signal component can be amplified by a stochastic force. A quite similar phenomenon can arise in chaotic systems when replacing the external noise by the internal chaotic dynamics. Having introduced the basics of conventional stochastic resonance (SR) I will focus on more complex situations: (i) noisefree SR, (ii) aperiodic SR, and (iii) stochastic multiresonance. Experiments in strongly excited ferrites and nonlinear electronic circuits will be presented as examples how to probe and analyze such concepts.