Reply to ‘‘Comment on ‘Light-scattering investigation of α and β relaxation near the liquid-glass transition of the molecular glass Salol’ ’’ and ‘‘Reexamination of the depolarized-light-scattering spectra of glass-forming liquids’’

The data analysis procedures employed in our previous publications [Phys. Rev. A 45, 3867 (1992); 46, 3343 (1992); Phys. Rev. E 47, 4223 (1993)] are reviewed and the significance of the cusp found in the scaling time ${\mathrm{\tau }}_{\mathrm{\beta }}$ is described. The implications of the Salol dielectric susceptibility results described by Dixon, Menon, and Nagel in their Comment [preceding paper, Phys. Rev. E 50, 1717 (1994)] are discussed. The relation between the alternative model presented in the Comment by Zeng, Kivelson, and Tarjus [second preceding paper, Phys. Rev. E 50, 1711 (1994)] and the mode-coupling theory is considered, and their alternative model is shown to be incompatible with experimental results, particularly inelastic neutron-scattering spectroscopy where the dipole–induced-dipole scattering mechanism is inoperative.