title: Global persistence exponent of the two-dimensional Blume-Capel model.
abstract: The global persistence exponent theta(g) is calculated for the two-dimensional Blume-Capel model following a quench to the critical point from both disordered states and such with small initial magnetizations. Estimates are obtained for the nonequilibrium critical dynamics on the critical line and at the tricritical point. Ising-like universality is observed along the critical line and a different value theta(g)=1.080(4) is found at the tricritical point.
authors.affiliation: Departamento de Física e Matemática, FFCLRP Universidade de São Paulo, Avenida Bandeirantes 3900, CEP 014040-901 Ribeirão Preto, São Paulo, Brazil. rsilva@dfm.ffclrp.usp.br
authors.forename: Roberto
authors.initials: R
authors.lastname: da Silva
authors.forename: Nelson A
authors.initials: NA
authors.lastname: Alves
authors.forename: J R
authors.initials: JR
authors.lastname: Drugowich de Felício