Numerical Study of Aging in the Generalized Random Energy Model

Details Numerical Study of Aging in the Generalized Random Energy Model Numerical Study of Aging in the Generalized Random Energy Model

2000-10-27

arxiv.org/abs/cond-mat/0010443v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

8 pages, 9 figures, to be submitted to J. Phys. Soc. Jpn

Scientific paper

10.1143/JPSJ.70.1099

Magnetizations are introduced to the Generalized Random Energy Model (GREM) and numerical simulations on ac susceptibility is made for direct comparison with experiments in glassy materials. Prominent dynamical natures of spin glasses, {\it i.e.}, {\em memory} effect and {\em reinitialization}, are reproduced well in the GREM. The existence of many layers causing continuous transitions is very important for the two natures. Results of experiments in other glassy materials such as polymers, supercooled glycerol and orientational glasses, which are contrast to those in spin glasses, are interpreted well by the Single-layer Random Energy Model.

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