1/f fluctuations in a ricepile model
نویسنده
چکیده
The temporal fluctuation of the average slope of a ricepile model is investigated. It is found that the power spectrum S(f) scales as 1/f with α ≈ 1.3 when grains of rice are added only to one end of the pile. If grains are randomly added to the pile, the power spectrum exhibits 1/f behavior. The profile fluctuations of the pile under different driving mechanisms are also discussed. PACS numbers: 05.40.-a, 05.65.+b, 45.70.-n, 05.70.Ln Typeset using REVTEX
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