In search of smooth sandpiles: the Edwards-Wilkinson equation with flow
Parthapratim Biswas, Arnab Majumdar, Anita Mehta, J. K. Bhattacharjee
Abstract
The well-known Edwards-Wilkinson equation with a flow term added exhibits a smoothing fixed point in addition to the normal EW fixed point. Based on this, we present a model of sandpiles involving a coupling between fixed and mobile grains, which then shows the smoothing behaviour that would be expected to obtain after avalanche propagation.
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