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

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

2008-02-12

arxiv.org/abs/0802.1631v1

Physical Review Letters 100 (2008) 099601

Physics

Condensed Matter

Statistical Mechanics

Comment to appear in PRL along with reply by Kawasaki et al

Scientific paper

10.1103/PhysRevLett.100.099601

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.

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