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Evidence of a Critical time in Constrained Kinetic Ising models

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arxiv cond-mat/9512154 v1 pith:N6NPVFWD submitted 1995-12-22 cond-mat

Evidence of a Critical time in Constrained Kinetic Ising models

classification cond-mat
keywords criticaltimeagingfastisingregimerelaxationabsent
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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