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<b>Self-organized Criticality, Long-time Correlations, and the Standard Transport Paradigm</b></p>

<p><b>Author:</b> J.A. Krommes</p>

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<b>Date of PPPL Report:</b> February 2000
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<B>Published in:</B>  Phys. Plasmas <b>7</b> (May 2000) 1752-1758.</p>

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Some aspects of low-frequency, long-wavelength fluctuations are considered. A stochastic model is used to show that power-law time correlations need not arise from self-organized criticality. A formula for the frequency spectrum of uncorrelated, overlapping avalanches is shown to be a special case of the spectral balance equation of renormalized statistical turbulence theory. It is argued that there need be no contradiction between the presence of long-time correlations and the existence of local transport coefficients.
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