How glasses explore configuration space
arXiv:cond-mat/0212091 · doi:10.1088/0953-8984/15/11/312
Abstract
We review a statistical picture of the glassy state derived from the analysis of the off-equilibrium fluctuation-dissipation relations. We define an ultra-long time limit where ``one time quantities'' are close to equilibrium while response and correlation can still display aging. In this limit it is possible to relate the fluctuation-response relation to static breaking of ergodicity. The resulting picture suggests that even far from that limit, the fluctuation-dissipation ratio relates to the rate of growth of the configurational entropy with free-energy density.
To appear in the proceedings of the "3rd workshop on non-equilibrium phenomena in supercooled fluids, glasses and amorphous materials" Pisa 22-27 September 2002