Spectral density of fluctuations of a double-well Duffing oscillator driven by white noise

摘要: The power spectrum of the archetypal fluctuating bistable system, underdamped double-well Duffing oscillator, is investigated both experimentally, with use an electronic circuit, and theoretically. experiment confirms previous analytic results for structure spectrum, including existence three distinct peaks within a certain parameter range. theory extended to describe analytically shape peak due intrawell fluctuations arbitrary noise intensities as well other features spectrum. Good quantitative agreement demonstrated.