  In contrast to the first-order correlation-driven Mott metal-insulator
transition (MIT), contin- uous disorder-driven transitions are intrinsically
quantum critical. Here, we investigate transport quantum criticality in the
Falicov-Kimball model, a representative of the latter class in the "strong
disorder" category. Employing cluster-dynamical mean-field theory (CDMFT), we
find clear and anomalous quantum critical scaling behavior manifesting as
perfect mirror symmetry of scaling curves on both sides of the MIT.
Surprisingly, we find that the beta-function, \b{eta}(g), scales like log(g)
deep into the bad-metallic phase as well, providing sound unified basis for
these findings. We argue that such "strong localization" quantum criticality
may manifest in real three-dimensional systems where disorder effects are more
important than electron-electron interactions.
