Abstract
The crystallization of a metastable melt is one of the most important non-equilibriumphenomena in condensed matter physics, and hard sphere colloidal model systems havebeen used for several decades to investigate this process by experimental observation andcomputer simulation. Nevertheless, there is still an unexplained discrepancy between thesimulation data and experimental nucleation rate densities. In this paper we examine thenucleation process in hard spheres using molecular dynamics and Monte Carlo simulation.We show that the crystallization process is mediated by precursors of low orientationalbond-order and that our simulation data fairly match the experimental data sets.
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