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

Abstract

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.

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

References in corpus (4)

• The frustration-based approach of supercooled liquids and the glass transition: a review and critical assessment
• Absence of Thermodynamic Phase Transition in a Model Glass Former
• Melting of Polydisperse Hard Disks
• Dispersity-Driven Melting Transition in Two Dimensional Solids

Cited by in corpus (4)

• Bond orientational ordering in liquids: Towards a unified description of water-like anomalies, liquid-liquid transition, glass transition, and crystallization
• Locally preferred structures and many-body static correlations in viscous liquids
• Geometrical Frustration and Static Correlations in Hard-Sphere Glass Formers
• The glass transition in molecules, colloids and grains: universality and specificity