Nagel scaling, relaxation and universality in the kinetic Ising model in an alternating isotopic chain

Details Nagel scaling, relaxation and universality in the kinetic Ising model in an alternating isotopic chain Nagel scaling, relaxation and universality in the kinetic Ising model in an alternating isotopic chain

1999-11-15

arxiv.org/abs/cond-mat/9911225v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

The dynamic critical exponent and the frequency and wave-vector dependent susceptibility of the kinetic Ising model with Glauber dynamics on an alternating isotopic chain are examined. The analysis provides to our knowledge the first connection between a microscopic model and the Nagel scaling curve originally proposed to describe dielectric susceptibility measurements of several glass-forming liquids. While support is given to the hypothesis relating the Nagel scaling to multiple relaxation processes, it is also found that the scaling function may also exhibit plateau regions and does not hold for low temperatures.

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