On the energy landscape at the glass transition

Details On the energy landscape at the glass transition On the energy landscape at the glass transition

2004-07-09

arxiv.org/abs/cond-mat/0407241v1

J. Low-Temp. Phys. 137, 345 (2004)

Physics

Condensed Matter

Disordered Systems and Neural Networks

9 pages, 2 figures, 20 references. Accepted in Journal of Low Temperature Physics in a volume dedicated to Sigi Hunklinger's 6

Scientific paper

10.1023/B:JOLT.0000049061.99214.

A recent hypothesis claims that the glass transition itself, though it is a very pronounced relaxation peak, is no separate relaxation process at all, but is just the breakdown of the shear modulus due to the weak elastic dipole interaction between all the quasi-independent relaxation centers of the glass. Two derivations are considered, one of them in terms of a breakdown of the shear modulus and the second in terms of a divergence of the shear compliance. Mechanical relaxation data from the literature for vitreous silica, glycerol, polymethylmethacrylate and polystyrene are found to be consistent with the first hypothesis.

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