Phys. Rev. Lett. 81, 1722–1725 (1998)Renormalization Group for Directed Sandpile ModelsReceived 14 January 1998; published in the issue dated 24 August 1998 Following the lead of earlier researchers, we construct a real space renormalization group map for a class of self-organized critical models. We then test a series of quantitative predictions implied by this map against direct simulations of various models. The theory passes four tests, but apparently fails a fifth. We also find that the map has an interesting nongeneric property, suggesting a deeper structure to the theory than previously appreciated. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.1722
DOI:
10.1103/PhysRevLett.81.1722
PACS:
64.60.Lx, 05.40.+j, 46.10.+z, 64.60.Ak
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