The conductivity tensor for the Hubbard model

1999/10/01 by F. Mancini, D. Villani
Materials Science · Physics and Astronomy · #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #Quantum many-body systems #cond-mat.str-el

paper · pdf · doi:10.1016/s0375-9601(99)00616-7

published as Phys. Lett. A 261, 357 (1999) · 14 pages, 3 EPS figures, RevTeX, to be published in Physics Letters A

openalex publication_date 1999/10/01 · arxiv created 1999/10/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

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.

Citations

• Conservation of the spectral moments in the n-pole approximation

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