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  • Title: Universal and nonuniversal features of glassy relaxation in propylene carbonate.
    Author: Gotze W, Voigtmann T.
    Journal: Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics; 2000 Apr; 61(4 Pt B):4133-47. PubMed ID: 11088208.
    Abstract:
    It is demonstrated that the susceptibility spectra of supercooled propylene carbonate as measured by depolarized-light scattering, dielectric-loss, and incoherent quasielastic neutron-scattering spectroscopy within the GHz window are simultaneously described by the solutions of a two-component schematic model of the mode-coupling theory (MCT) for the evolution of glassy dynamics. It is shown that the universal beta-relaxation-scaling laws, dealing with the asymptotic behavior of the MCT solutions, describe the qualitative features of the calculated spectra. But the nonuniversal corrections to the scaling laws render it impossible to achieve a complete quantitative description using only the leading-order-asymptotic results.
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