第９２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２０年２月２８日（木）１５時から１７時まで

場所：京都大学工学部総合校舎２１３講義室（吉田キャンパス）

講演者： Arkady Pikovsky（Potsdam大学）

講演題目：
Self-organized quasiperiodicity in nonlinearly coupled oscillator ensembles

講演要旨：

We generalize the Kuramoto-Daido model of globally coupled oscillators
to the case of nonlinear coupling and describe a transition from fully
synchronous periodic oscillations to partially synchronous
quasiperiodic dynamics in such a system. We present an analytically
solvable model that predicts a regime where the mean field does not
entrain individual oscillators, but has a frequency incommensurate to
theirs. The self-organized onset of quasiperiodicity is illustrated
with Landau-Stuart oscillators and a Josephson junction array with a
nonlinear coupling.