Correlated electrons and generalized statistics


Several important generalizations of Fermi-Dirac distribution are compared to numerical and experimental results for correlated electron systems. It is found that the quantum distributions based on incomplete information hypothesis can be useful for describing this kind of systems. We show that the additive incomplete fermion distribution gives very good description of weakly correlated electrons and that the nonadditive one is suitable to very strong correlated cases.Comment: 13 pages, RevTex file, 4 ps figures. The European Physical Journal B (2002), in pres

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