Fluctuations in glassy systems

Details Fluctuations in glassy systems Fluctuations in glassy systems

2007-04-05

arxiv.org/abs/0704.0684v1

J. Stat. Mech. (2007) P07022

Physics

Condensed Matter

Disordered Systems and Neural Networks

33 pages, 7 figs, contribution to JSTAT special issue `Principles of Dynamical Systems' work-shop at Newton Institute, Univ. o

Scientific paper

10.1088/1742-5468/2007/07/P07022

We summarize a theoretical framework based on global time-reparametrization invariance that explains the origin of dynamic fluctuations in glassy systems. We introduce the main ideas without getting into much technical details. We describe a number of consequences arising from this scenario that can be tested numerically and experimentally distinguishing those that can also be explained by other mechanisms from the ones that we believe, are special to our proposal. We support our claims by presenting some numerical checks performed on the 3d Edwards-Anderson spin-glass. Finally, we discuss up to which extent these ideas apply to super-cooled liquids that have been studied in much more detail up to present.

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