Classical delocalization of interacting electrons

We present a computer simulation study or a disordered two-dimensional syst em of localized inter acting electrons at thermal equilibrium. Is is shown that the configuration of occupied sites within the Coulomb gap persistentl y changes at temperatures much less than the gap width. Also, we observe th ermal equilibration at low temperatures, which suggests that a glass transi tion may occur only at T = 0. The results are interpreted in terms of the d rift of the system between multiple energy minima, and may imply that inter acting electrons are effectively delocalized within the Coulomb gap. Insula ting properties, such as hopping conduction, appear as a result of long equ ilibration times associated with glassy dynamics. These results may shine n ew light on the problem of the metal-insulator transition.