Does a Growing Static Length Scale Control the Glass Transition?
Accepted version
Peer-reviewed
Repository URI
Repository DOI
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
1079-7114
Volume Title
119
Publisher
American Physical Society (APS)
Publisher DOI
Sponsorship
Royal Society (RP080053)