Grupo de Física Estadística

We study ageing during surface growth processes described by the one-dimensional Kardar-Parisi-Zhang equation. Starting from a flat initial state, the systems undergo simple ageing in both correlators and linear responses and its dynamical scaling is characterised by the ageing exponents $a=-1/3$, $b=-2/3$, $\lambda_C=\lambda_R=1$ and $z=3/2$.

The form of the autoresponse scaling function is well described by the recently constructed logarithmic extension of local scale-invariance.