initial conditions and thermal histories. Due to space homogeneity, $G(r,t)$ does not depend on $i$. If there is a single characteristic length in the system, one has dynamical scaling [@Bray94], which implies G(r,t)=g(x), \[scalgferro\] where $x=r/L(t)$. In the Ising model one finds [@Glauber63] g(x)=erfc {x}. \[struttising\] with $L(t)=\sqrt {2t}$. For small $x$ one has the Porod linear behavior $1-g(x)\sim x$, which is expected for systems with sharp interfaces [@Bray94]. From Eq. (\[scalgferro\]) one can extract a quantity $L_G(t)$ proportional to $L(t)$ from the condition G(L\_G(t),t)=, \[halfheight\] namely as the half-height width of $G(r,t)$. In the XY model, $G(r,t)$ still obeys Eq. (\[scalgferro\]), with $x=r/L_w(t)$, $L_w(t)=2^{3/4}(\pi t)^{1/4}$, and [@Bray94] g(x)={-}. \[xystrutt\] Here $\xi _i$ is the correlation length of the initial condition which, for a quench from a disordered state, is of the order of the lattice spacing. The Porod law is not obeyed, since instead of sharp interfaces one has smooth textures. Note that $G(r,t)$ has a scaling form, although dynamical scaling is violated. Scaling violations can be evidenced by considering different quantities as, for instance, the autocorrelation function C(t,s)=\_i (t)\_i (s) . \[autocorr\] In the Ising model this quantity can be cast in scaling form [@Glauber63] C(t,s)=h(y), \[ccs\] where 