A percolation model for slow dynamics in glass-forming materials
Abstract
We identify a link between the glass transition and percolation of mobile regions in configuration space. We find that many hallmarks of glassy dynamics, for example stretched-exponential response functions and a diverging structural relaxation time, are consequences of the critical properties of mean-field percolation. Specific predictions of the percolation model include the range of possible stretching exponents 1/3 ≤ β ≤ 1 and the functional dependence of the structural relaxation time τα and exponent β on temperature, density, and wave number.
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