Abstract
Systems of localized electrons interacting via the long-range Coulomb interaction exhibit a pseudo-gap in the single-particle density of states (DOS) at the Fermi energy. This effect is studied by means of computer experiments. In both the two-dimensional and three-dimensional cases the DOS is found to decrease considerably faster than predicted by analytical studies, as the Fermi energy is approached. A logarithmic pseudo-gap is observed in the one-dimensional case.
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