eprintid: 1139
rev_number: 9
eprint_status: archive
userid: 6
dir: disk0/00/00/11/39
datestamp: 2012-02-21 11:53:24
lastmod: 2012-02-21 14:07:19
status_changed: 2012-02-21 11:53:24
type: article
metadata_visibility: show
creators_name: Ciliberti, Stefano
creators_name: Caldarelli, Guido
creators_name: Loreto, Vittorio
creators_name: Pietronero, Luciano
creators_id: 
creators_id: guido.caldarelli@imtlucca.it
creators_id: 
creators_id: 
title: Local rigidity in sandpile models
ispublished: pub
subjects: QC
divisions: EIC
full_text_status: none
keywords: PACS: 05.65.+b, 05.20.-y, 05.40.-a

abstract: 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, 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 nonambiguous distinction between sandpilelike systems and diffusive systems. Numerical simulations support our analytical results.
date: 2002
publication: Physical Review E
volume: 66
number: 1
publisher: American Physical Society
id_number: 10.1103/PhysRevE.66.016133
refereed: TRUE
issn: 1539-3755
official_url: http://dx.doi.org/10.1103/PhysRevE.66.016133
citation:   Ciliberti, Stefano and Caldarelli, Guido and Loreto, Vittorio and Pietronero, Luciano  Local rigidity in sandpile models.  Physical Review E, 66 (1).   ISSN 1539-3755      (2002)