Fluctuations of 1/f noise and the low-frequency cutoff paradox

Markus Niemann, Holger Kantz, Eli Barkai

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Recent experiments on blinking quantum dots, weak turbulence in liquid crystals, and nanoelectrodes reveal the fundamental connection between 1/f noise and power law intermittency. The nonstationarity of the process implies that the power spectrum is random - a manifestation of weak ergodicity breaking. Here, we obtain the universal distribution of the power spectrum, which can be used to identify intermittency as the source of the noise. We solve in this case an outstanding paradox on the nonintegrability of 1/f noise and the violation of Parseval's theorem. We explain why there is no physical low-frequency cutoff and therefore why it cannot be found in experiments.

Original languageEnglish
Article number140603
JournalPhysical Review Letters
Issue number14
StatePublished - 5 Apr 2013


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