title: Short-time dynamics of a family of XY noncollinear magnets.
abstract: Critical scaling and universality in the short-time dynamics for antiferromagnetic models on a three-dimensional stacked triangular lattice are investigated using Monte Carlo simulation. We have determined the critical point by searching for the best power law for the order parameter as a function of time and measured the critical exponents. Our results indicate that it is possible to distinguish weak first-order from second-order phase transitions and confirm that XY antiferromagnetic systems undergo a (weak) first-order phase transition accompanied by pseudocritical scaling.
authors.affiliation: Department of Physics, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5.
authors.forename: S
authors.initials: S
authors.lastname: Bekhechi
authors.forename: B W
authors.initials: BW
authors.lastname: Southern
authors.forename: A
authors.initials: A
authors.lastname: Peles
authors.forename: D
authors.initials: D
authors.lastname: Mouhanna