Dielectric and transport properties of a supercooled symmetrical molten salt

The liquid-glass transition of the restricted primitive model for a symmetr ical molten salt is studied using mode-coupling theory. The transition at h igh densities is predicted to obey the Lindemann criterion for melting, and the charge-density peak found in neutron-scattering experiments on ionic g lass formers is qualitatively reproduced. Frequency-dependent dielectric fu nctions, shear viscosities, and dynamical conductivities of the supercooled liquid are presented. Comparing the latter to the diffusion constant, we f ind that mode-coupling theory reproduces the Nernst-Einstein relation. The Stokes-Einstein radius is found to be approximately equal to the particle r adius only near the high-density glass transition. [S1063-651X(99)08609-2].