1 f Noise in Bak-Tang-Wiesenfeld Models on Narrow Stripes
نویسندگان
چکیده
We report our findings of a 1 f power spectrum for the total amount of sand in directed and undirected Bak-Tang-Wiesenfeld models confined to narrow stripes and driven locally. The underlying mechanism for the 1 f noise in these systems is an exponentially long configuration memory giving rise to a very broad distribution of time scales. Both models are solved analytically with the help of an operator algebra to explicitly show the appearance of the long configuration memory.
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