Fig. 4.

(A) Long-time diffusion coefficients $D_l$ as a function of distance to the melting point $\varphi -{\varphi }_m$ for static (circles) and dynamic (triangles) crystals, with ${\varphi }_m=0.061$ as determined in Fig. S1. Open symbols indicate $D_l$ determined from the mean-squared displacements at $\tau =5\cdot {10}^2{\tau }_b$, whereas solid symbols are computed by extrapolating $⟨\mathrm{\Delta }{r}^2⟩$ to infinity. The solid line is a fit to the transition-state prediction for $D_l(\varphi )$, as described in the text. (B) $⟨\mathrm{\Delta }{r}^2⟩$ for individual particles, with the ensemble-average $⟨\mathrm{\Delta }{r}^2⟩$ (thick line) superposed for a fixed (Left) and a dynamic (Right) crystal.