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Glassiness in a model without energy barriers
Ritort Farran, Fèlix
Universitat de Barcelona
We propose a microscopic model without energy barriers in order to explain some generic features observed in structural glasses. The statics can be exactly solved while the dynamics has been clarified using Monte Carlo calculations. Although the model has no thermodynamic transition, it captures some of the essential features of real glasses, i.e., extremely slow relaxation, time dependent hysteresis effects, anomalous increase of the relaxation time, and aging. This suggests that the effect of entropy barriers can be an important ingredient to account for the behavior observed in real glasses.
Matèria condensada tova
Models ordre-desordre
Transformacions de fase (Física estadística)
Soft condensed matter
Order-disorder models
Phase transformations (Statistical physics)
(c) American Physical Society, 1995
American Physical Society.

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