Exact Exponent $\lambda$ of the Autocorrelation Function for a Soluble Model of Coarsening

A. J. Bray, B. Derrida

The exponent $\lambda$ that describes the decay of the autocorrelation function $A(t)$ in a phase ordering system, $A(t)\sim L^{-(d-\lambda )}$, where $d$ is the dimension and $L$ the characte…