Phase Ordering Kinetics of One-Dimensional Non-Conserved Scalar Systems

Abstract

We consider the phase-ordering kinetics of one-dimensional scalar systems. For attractive long-range ($r^{-(1+σ)}$) interactions with $σ>0$, ``Energy-Scaling'' arguments predict a growth-law of the average domain size $L \sim t^{1/(1+σ)}$ for all $σ>0$. Numerical results for $σ=0.5$, $1.0$, and $1.5$ demonstrate both scaling and the predicted growth laws. For purely short-range interactions, an approach of Nagai and Kawasaki is asymptotically exact. For this case, the equal-time correlations scale, but the time-derivative correlations break scaling. The short-range solution also applies to systems with long-range interactions when $σ\rightarrow \infty$, and in that limit the amplitude of the growth law is exactly calculated.