Comment on "Correlation between Dynamic Heterogeneity and Medium-Range Order in Two-Dimensional Glass-Forming Liquids"

François Sausset (1) , Gilles Tarjus (1)

1 LPTMC - Laboratoire de Physique Théorique de la Matière Condensée

In a recent letter, Kawasaki et al. (PRL 99, 215701 (2007)) study glass formation in a 2-dimensional (2D) model of polydisperse repulsive disks. They give numerical evidence for a direct relation between slowing down of the relaxation, extension of some medium-range order, and development of dynamic heterogeneities. We disagree with the authors' interpretation on two points which we believe to be potentially important for understanding the glass transition.

Mots clés: Glass transition; frustration

Domaines: Mécanique statistique [cond-mat.stat-mech]

François Sausset, Gilles Tarjus. Comment on "Correlation between Dynamic Heterogeneity and Medium-Range Order in Two-Dimensional Glass-Forming Liquids". Physical Review Letters, 2008, 100, pp.099601. ⟨10.1103/PhysRevLett.100.099601⟩. ⟨hal-00251004⟩