Dykman, M. I. and Mannella, R. and McClintock, Peter V. E. and Soskin, S. M. and Stocks, N. G. (1991) Zero-frequency spectral peaks of underdamped nonlinear oscillators with asymmetric potentials. Physical Review A, 43 (4). pp. 1701-1708. ISSN 1050-2947
Full text not available from this repository.Abstract
The spectral density of the fluctuations of an underdamped, single-well, nonlinear oscillator driven by a random force has been investigated. Electronic analogue experiments have demonstrated the existence of a narrow spectral peak at zero-frequency; such a peak only appears, however, in those cases where the potential is non-centro-symmetric. The evolution of the peak with variation of a parameter characterising the asymmetry of the potential, and with noise intensity, has been investigated both experimentally and theoretically. It is found that the half-width of the peak remains relatively small (of the order of the reciprocal relaxation time) over a broad range of noise intensities. The theory of the peak shape is shown to be in close agreement with experiment. The relationships of the peak to the (apparently similar) zero-frequency peaks observed previously in double-well oscillators, where they are responsible for stochastic resonance, and to the supernarrow spectral peaks found near kinetic phase transitions in periodically driven systems, are discussed.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review A |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Engineering Faculty of Science and Technology > Physics Faculty of Science and Technology > Lancaster Environment Centre |
| ID Code: | 32214 |
| Deposited By: | Professor P. V. E. McClintock |
| Deposited On: | 18 Mar 2010 14:40 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 17:07 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/32214 |
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