Abstract
The density of hole states for the strongly correlated infinite-dimensional Hubbard model is studied with use of the moment-expansion method. While exact results suggest a divergent spectrum width for ferromagnetic spin configurations, numerical calculations indicate a finite spectrum width for antiferromagnetic and random spin configurations. The spectrum widths for antiferromagnetic and random spin configurations are 5.6568\ifmmode\pm\else\textpm\fi{}0.0001 and 10\ifmmode\pm\else\textpm\fi{}2, respectively.
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