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Article overview
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Does a growing static length scale control the glass transition? | | Matthieu Wyart
; Michael E. Cates
; | | Date: |
18 May 2017 | | Abstract: | Several theories of the glass transition propose that the structural
relaxation time { au}{alpha} is controlled by a growing static length scale
{xi} that is determined by the free energy landscape but not by the local
dynamical rules governing its exploration. We argue, based on recent
simulations using particle- radius-swap dynamics, that only a modest factor in
the increase in { au}{alpha} on approach to the glass transition stem from
the growth of a static length, with a vastly larger contribution attributable
instead to a slowdown of local dynamics. This reinforces arguments that we base
on the observed strong coupling of particle diffusion and density fluctuations
in real glasses. | | Source: | arXiv, 1705.6588 | | Services: | Forum | Review | PDF | Favorites | |
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