We use a phenomenological field theory, reflecting the symmetries and conservation laws of sandpiles, to compare the driven dissipative sandpile, widely studied in the context of self-organized criticality, with the corresponding fixed-energy model. The latter displays an absorbing-state phase transition with upper critical dimension $d_c=4$. We show that the driven model exhibits a fundamentally different approach to the critical point, and compute a subset of critical exponents. We present numerical simulations in support of our theoretical predictions.
DRIVING, CONSERVATION, AND ABSORBING STATES IN SANDPILES
Alessandro Vespignani,R. Dickman,M. A. Muñoz,S. Zapperi
Published 1998 in Physical Review Letters
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- Publication year
1998
- Venue
Physical Review Letters
- Publication date
1998-06-21
- Fields of study
Physics
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