Super-Aging in two-dimensional random ferromagnets

Abstract

We study the aging properties, in particular the two-time autocorrelations, of the two-dimensional randomly diluted Ising ferromagnet below the critical temperature via Monte-Carlo simulations. We find that the autocorrelation function displays additive aging $C(t,t_w)=C_{st}(t)+C_{ag}(t,t_w)$, where the stationary part $C_{st}$ decays algebraically. The aging part shows anomalous scaling $C_{ag}(t,t_w)=\mathcal{C}(h(t)/h(t_w))$, where $h(u)$ is a non-homogeneous function excluding a $t/t_w$ scaling.

4 pages

References in corpus (6)

• Ageing Properties of Critical Systems
• Domain Growth in Ising Systems with Quenched Disorder
• Domain Growth in Random Magnets
• Two-time autocorrelation function in phase-ordering kinetics from local scale-invariance
• Ageing in disordered magnets and local scale-invariance
• Non-equilibrium critical dynamics in disordered ferromagnets

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