Dinámica de sistemas de espines de Ising con frustración

Abstract

In this work we studied the zero temperature quenching dynamics of Ising spin systems with competing interactions, concentrating on the BNNNI model. We calculated: Residual energy, persistence probability, average number of active sites and autocorrelation. We found 3 different dynamical universality classes: on the first one, where 0 < κ < 1 there is no power law for all the quantities; on the second one, where κ = 1, we found θ 0.43 and z 0.35; finally for κ > 1 we found θ 0.40 and z 0.22. We also found autocorrelation has very similar behavior for different Ising spyn systems