Low-Density Ionic Glass

Mode-coupling theory applied to a classical ionic fluid predicts a new glassy phase at low densities due to long-range Coulomb interactions besides the high-density glass resulting from geometrical restrictions imposed by hard-core repulsions. The fluid-glass phase boundary exhibits a power law ${\eta }_c\propto {\left(T_c^{*}\right)}^3$ for asymptotically small packing fractions. The glass dielectric constant varies between $1\lesssim \epsilon \lesssim 10$ along the phase boundary.