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cond-mat.dis-nn2003
The Kovacs effect in model glasses
E. M. Bertin, J. -P. Bouchaud, J. -M. Drouffe +1
We discuss the `memory effect' discovered in the 60's by Kovacs in temperature shift experiments on glassy polymers, where the volume (or energy) displays a non monotonous time beh…
cond-mat.dis-nn2002
Sub-diffusion and localization in the one dimensional trap model
E. M. Bertin, J. -P. Bouchaud
We study a one dimensional generalization of the exponential trap model using both numerical simulations and analytical approximations. We obtain the asymptotic shape of the averag…