Local Rigidity in Sandpile Models

Details Local Rigidity in Sandpile Models Local Rigidity in Sandpile Models

2002-04-09

arxiv.org/abs/cond-mat/0204207v2

Phys Rev E 66, 016133 (2002)

Physics

Condensed Matter

Statistical Mechanics

to be published in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.66.016133

We address the problem of the role of the concept of local rigidity in the family of sandpile systems. We define rigidity as the ratio between the critical energy and the amplitude of the external perturbation and we show, in the framework of the Dynamically Driven Renormalization Group (DDRG), that any finite value of the rigidity in a generalized sandpile model renormalizes to an infinite value at the fixed point, i.e. on a large scale. The fixed point value of the rigidity allows then for a non ambiguous distinction between sandpile-like systems and diffusive systems. Numerical simulations support our analytical results.

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