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Proceedings Paper

Avalanche correlation in power spectra
Author(s): Roberto Eggenhöffner; Edvige Celasco; Marcello Celasco
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Paper Abstract

Outstanding topic on noise phenomena is the occurrence of peaks in the wide frequency range from mHz to above MHz in the power spectra of many natural systems. Recently, the challenging interest has oriented to focus the spectral peaks superimposed to the 1/f noise. Until now, all existing theories failed to explain peaked spectra. Here we highlight the role of correlation among avalanches as the main source of the noise peaks observed. The present theory is based on first principle statistics of elementary events clustered in time-amplitude correlated avalanches. A spectral power master equation suitable to explain peaked noise spectra arising from avalanche correlations is achieved analytically. Excellent agreement with our experiments in superconductors and with experiments in Escherichia coli, in single DNA molecule and in single electron tunneling is reported. Our statistical model shows that avalanche correlation gives wide peaks in the power spectrum superimposed to the 1/f behavior with high slope, a typical signature of avalanche processes.

Paper Details

Date Published: 15 June 2007
PDF: 19 pages
Proc. SPIE 6601, Noise and Stochastics in Complex Systems and Finance, 66010N (15 June 2007);
Show Author Affiliations
Roberto Eggenhöffner, Univ. degli Studi di Genova (Italy)
Edvige Celasco, Politecnico di Torino (Italy)
Marcello Celasco, Univ. degli Studi di Genova (Italy)

Published in SPIE Proceedings Vol. 6601:
Noise and Stochastics in Complex Systems and Finance
János Kertész; Stefan Bornholdt; Rosario N. Mantegna, Editor(s)

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