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Does a Growing Static Length Scale Control the Glass Transition?

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Wyart, Matthieu 
Cates, Michael E 

Abstract

Several theories of the glass transition propose that the structural relaxation time τ_{α} is controlled by a growing static length scale ξ that is determined by the free energy landscape but not by the local dynamic rules governing its exploration. We argue, based on recent simulations using particle-radius-swap dynamics, that only a modest factor in the increase in τ_{α} on approach to the glass transition may 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.

Description

Keywords

0914 Resources Engineering and Extractive Metallurgy

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

119

Publisher

American Physical Society (APS)
Sponsorship
Royal Society (RP080053)