title: Universality of persistence exponents in two-dimensional Ostwald ripening.
abstract: We measured persistence exponents theta(phi) of Ostwald ripening in two dimensions, as a function of the area fraction phi occupied by coarsening domains. The values of theta(phi) in two systems, succinonitrile and brine, quenched to their liquid-solid coexistence region, compare well with one another, providing compelling evidence for the universality of the one-parameter family of exponents. For small phi, theta(phi) approximately = 0.39phi, as predicted by a model that assumes no correlations between evolving domains. These constitute the first measurements of persistence exponents in the case of phase transitions with a conserved order parameter.
authors.affiliation: Departament d'ECM, Facultat de Física, Universitat de Barcelona, Diagonal 647, E-08028 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Soriano
authors.forename: Ido
authors.initials: I
authors.lastname: Braslavsky
authors.forename: Di
authors.initials: D
authors.lastname: Xu
authors.forename: Oleg
authors.initials: O
authors.lastname: Krichevsky
authors.forename: Joel
authors.initials: J
authors.lastname: Stavans