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The conductivity tensor for the Hubbard model

โœ Scribed by F. Mancini; D. Villani

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
137 KB
Volume
261
Category
Article
ISSN
0375-9601

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โœฆ Synopsis

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.

๐Ÿ“œ SIMILAR VOLUMES

Optical conductivity of the two-dimensio
Optical conductivity of the two-dimensional Hubbard model
โœ W. Brenig ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 175 KB

We analyze the optical conductivity of the two-dimensional Hubbard model using the projection technique. The current self-energy and the static current susceptibility are evaluated perturbatively applying a novel real space summation technique. Results for the Drude weight and the incoherent spectru