We study sandpile models as closed systems, with the conserved energy density [Formula Presented] playing the role of an external parameter. The critical energy density [Formula Presented] marks a nonequilibrium phase transition between active and absorbing states. Several fixed-energy sandpiles are studied in extensive simulations of stationary and transient properties, as well as the dynamics of roughening in an interface-height representation. Our primary goal is to identify the universality classes of such models, in hopes of assessing the validity of two recently proposed approaches to sandpiles: a phenomenological continuum Langevin description with absorbing states, and a mapping to driven interface dynamics in random media
Absorbing-state phase transitions in fixed-energy sandpiles / A. Vespignani, R. Dickman, M.A. Muñoz, S. Zapperi. - In: PHYSICAL REVIEW E. - ISSN 1063-651X. - 62:4(2000), pp. 4564-4582.
Absorbing-state phase transitions in fixed-energy sandpiles
S. Zapperi
2000
Abstract
We study sandpile models as closed systems, with the conserved energy density [Formula Presented] playing the role of an external parameter. The critical energy density [Formula Presented] marks a nonequilibrium phase transition between active and absorbing states. Several fixed-energy sandpiles are studied in extensive simulations of stationary and transient properties, as well as the dynamics of roughening in an interface-height representation. Our primary goal is to identify the universality classes of such models, in hopes of assessing the validity of two recently proposed approaches to sandpiles: a phenomenological continuum Langevin description with absorbing states, and a mapping to driven interface dynamics in random mediaFile | Dimensione | Formato | |
---|---|---|---|
PhysRevE.62.4564.pdf
accesso aperto
Tipologia:
Publisher's version/PDF
Dimensione
334.4 kB
Formato
Adobe PDF
|
334.4 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.