Self-organized criticality, long-time correlations, and the standard transport paradigm

Krommes, J.A.

Princeton University. Plasma Physics Laboratory.

关键词: Stochastic Processes;    Correlations;    70 Plasma Physics And Fusion;    Plasma Simulation;    Turbulence;   

DOI  :  10.2172/751200
RP-ID  :  PPPL--3435
RP-ID  :  AC02-76CH03073
RP-ID  :  751200

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.