「非線形・統計力学とその周辺」セミナーのご案内

第63回「非線形・統計力学とその周辺」セミナーのご案内

日時:平成17年3月16日(水)午後4時より

場所:京都大学工学部総合校舎2階213講義室

講演者:Prof. Hartmut Benner (TU Darmstadt)

講演題目: Noise-Free Stochastic Resonance in Spin-Wave Chaos and Electronic Circuits

講演要旨:

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.