The authors consider the distribution of relaxation times of randomly branched polymers in a sol, or of a gel in the reaction bath, close to the gelation threshold. They find that it is a slowly decaying power law with a cutoff at large times. This distribution cannot be characterised by one single time, but by two different times. Both diverge as one approaches the threshold, with different exponents depending on the percolation exponents s and t for the conductivity and the superconductivity respectively. These results also apply to mixtures of conductors and dielectric materials.
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M. Daoud (1988) studied this question.
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