Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The random first-order transition theory of the dynamics of supercooled liquids is extended to treat aging phenomena in nonequilibrium structural glasses. A reformulation of the idea of “entropic droplets” in terms of libraries of local energy landscapes is introduced which treats in a uniform way the supercooled liquid (reproducing earlier results) and glassy regimes. The resulting microscopic theory of aging makes contact with the Nayaranaswamy-Moynihan-Tool nonlinear relaxation formalism and the Hodge-Scherer extrapolation of the Adam-Gibbs formula, but deviations from both approaches are predicted and shown to be consistent with experiment. The nonlinearity of glassy relaxation is shown to quantitatively correlate with liquid fragility. The residual non-Arrhenius temperature dependence of relaxation observed in quenched glasses is explained. The broadening of relaxation spectra in the nonequilibrium glass with decreasing temperature is quantitatively predicted. The theory leads to the prediction of spatially fluctuating fictive temperatures in the long-aged glassy state, which have non-Gaussian statistics. This can give rise to “ultraslow” relaxations in systems after deep quenches.

Bibliography

Lubchenko, V., & Wolynes, P. G. (2004). Theory of aging in structural glasses. The Journal of Chemical Physics, 121(7), 2852–2865.

Authors 2
  1. Vassiliy Lubchenko (first)
  2. Peter G. Wolynes (additional)
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Dates
Type When
Created 21 years ago (July 30, 2004, 6:04 p.m.)
Deposited 1 year, 7 months ago (Jan. 13, 2024, 9:07 p.m.)
Indexed 1 month ago (July 16, 2025, 9:38 a.m.)
Issued 21 years ago (July 30, 2004)
Published 21 years ago (July 30, 2004)
Published Online 21 years ago (July 30, 2004)
Published Print 21 years ago (Aug. 15, 2004)
Funders 0

None

@article{Lubchenko_2004, title={Theory of aging in structural glasses}, volume={121}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1771633}, DOI={10.1063/1.1771633}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Lubchenko, Vassiliy and Wolynes, Peter G.}, year={2004}, month=jul, pages={2852–2865} }