Evidence of a Critical time in Constrained Kinetic Ising models

Details Evidence of a Critical time in Constrained Kinetic Ising models Evidence of a Critical time in Constrained Kinetic Ising models

1995-12-22

arxiv.org/abs/cond-mat/9512154v1

Physics

Condensed Matter

20 Pages + 7 Figures, Revtex

Scientific paper

10.1103/PhysRevB.54.930

We study the relaxational dynamics of the one-spin facilitated Ising model introduced by Fredrickson and Andersen. We show the existence of a critical time which separates an initial regime in which the relaxation is exponentially fast and aging is absent from a regime in which relaxation becomes slow and aging effects are present. The presence of this fast exponential process and its associated critical time is in agreement with some recent experimental results on fragile glasses.

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