title: The two-dimensional site-diluted Ising model: a short-time-dynamics approach.
abstract: The site-diluted Ising ferromagnet is investigated on a square lattice, within short-time-dynamics numerical simulations, for different site concentrations. The dynamical exponents θ and z are obtained and it is shown that these exponents do depend strongly on the disorder, exhibiting a clear breakdown of universality, characterized by relative variations of nearly 100% in the range of site concentrations investigated. In what concerns the static exponents β and ν, universality is preserved within the error bars.
authors.affiliation: Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, Campus Universitário-C P 1641, 59072-970 Natal-RN, Brazil.
authors.forename: L F
authors.initials: LF
authors.lastname: da Silva
authors.forename: U L
authors.initials: UL
authors.lastname: Fulco
authors.forename: F D
authors.initials: FD
authors.lastname: Nobre