The Conductivity Tensor for the Hubbard Model

Details The Conductivity Tensor for the Hubbard Model The Conductivity Tensor for the Hubbard Model

1999-10-27

arxiv.org/abs/cond-mat/9910463v1

Phys. Lett. A 261, 357 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 3 EPS figures, RevTeX, to be published in Physics Letters A

Scientific paper

10.1016/S0375-9601(99)00616-7

A new theoretical analysis of the current-charge and charge-charge
propagators is presented for the Hubbard model, using the static approximation
for the Composite Operator Method. This approximation manifestly preserves a
sum rule which governs the single-site dynamics. We compare our results with
those obtained by numerical analysis.

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