Abstract
Reply to “Comment on ‘Merging of the α and β relaxations in polybutadiene: A neutron spin echo and dielectric study’ ”
Highlights
Rev. E 54, 3853 ͑1996͔͒, Donth et al conclude that the procedure followed by us for analyzing data of glass-forming polymers, which is based on a Williams-like ansatz, is not suited for the merging region of the ␣ and  dielectric processes
The main conclusion of the paper was that both sets of measurements seem to mirror in a different way the same physics: the ␣ and  processes can be considered in a good approximation as statistically independent processes
There, the theoretical understanding of the response function is well developed and van Hove correlation functions may be strictly applied. These experiments revealed to our own astonishment that to a very good approximation the correlation functions related to ␣ and  relaxation appear as a product, validating the assumption of statistically independent processes
Summary
Rev. E 54, 3853 ͑1996͔͒, Donth et al conclude that the procedure followed by us for analyzing data of glass-forming polymers, which is based on a Williams-like ansatz, is not suited for the merging region of the ␣ and  dielectric processes. If a neutron experiment addressing the dynamics on a molecular level in space and time is very compatible with the statistical independence of both processes, this observation must imply that such independence must be at the basis of an interpretation of results from other experimental techniques as well.
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