title: Two-component Abelian sandpile models.
abstract: In one-component Abelian sandpile models, the toppling probabilities are independent quantities. This is not the case in multicomponent models. The condition of associativity of the underlying Abelian algebras imposes nonlinear relations among the toppling probabilities. These relations are derived for the case of two-component quadratic Abelian algebras. We show that Abelian sandpile models with two conservation laws have only trivial avalanches.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, 13560-590 São Carlos, São Paulo, Brazil. alcaraz@if.sc.usp.br
authors.forename: F C
authors.initials: FC
authors.lastname: Alcaraz
authors.forename: P
authors.initials: P
authors.lastname: Pyatov
authors.forename: V
authors.initials: V
authors.lastname: Rittenberg