Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems

Details Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems

2001-07-30

arxiv.org/abs/cond-mat/0107596v1

J. Non-Cryst. Solids 307, 161 (2002)

Physics

Condensed Matter

Statistical Mechanics

15 pages, 8 figures

Scientific paper

10.1016/S0022-3093(02)01455-2

We review an scenario for the non-equilibrium dynamics of glassy systems that has been motivated by the exact solution of simple models. This approach allows one to set on firmer grounds well-known phenomenological theories. The old ideas of entropy crisis, fictive temperatures, free-volume... have clear definitions within these models. Aging effects in the glass phase are also captured. One of the salient features of the analytic solution, the breakdown of the fluctuation-dissipation relations, provides a definition of a bonafide {\it effective temperature} that is measurable by a thermometer, controls heat flows, partial equilibrations, and the reaction to the external injection of heat. The effective temperature is an extremely robust concept that appears in non-equilibrium systems in the limit of small entropy production as, for instance, sheared fluids, glasses at low temperatures when quantum fluctuations are relevant, tapped or vibrated granular matter, etc. The emerging scenario is one of partial equilibrations, in which glassy systems arrange their internal degrees of freedom so that the slow ones select their own effective temperatures. It has been proven to be consistent within any perturbative resummation scheme (mode coupling, etc) and it can be challenged by experimental and numerical tests, some of which it has already passed.

Affiliated with

Also associated with

No associations

Rating

Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slow nonequilibrium dynamics: parallels between classical and quantum glasses and gently driven systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-447567