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Observation of zero-dispersion peaks in the fluctuation spectrum of an underdamped single-well oscillator.

Research output: Contribution to journalJournal article

Published

Journal publication date1993
JournalEPL
Journal number4
Volume21
Number of pages6
Pages395-400
Original languageEnglish

Abstract

It is demonstrated by analogue electronic experiment that the fluctuation spectra of single-well oscillators can sometimes display a twin-peaked structure. The results for the particular system considered confinn and illustrate for the fIrst time the earlier general prediction of zero-dispersion (additional) peaks in the spectra of underdamped systems possessing an extremum in the dependence of their eigenfrequency on energy. The corresponding large, noise-enhanced, susceptibility implies the existence of stochastic resonance in such systems.