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Exact Drude weight for the one-dimensional Hubbard model at finite temperatures | | Satoshi Fujimoto
; Norio Kawakami
; | | Date: |
29 Oct 1997 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | Kyoto University, University of Oxford), Norio Kawakami(Osaka University | | Abstract: | The Drude weight for the one-dimensional Hubbard model is investigated at finite temperatures by using the Bethe ansatz solution. Evaluating finite-size corrections to the thermodynamic Bethe ansatz equations, we obtain the formula for the Drude weight as the response of the system to an external gauge potential. We perform low-temperature expansions of the Drude weight in the case of half-filling as well as away from half-filling, which clearly distinguish the Mott-insulating state from the metallic state. | | Source: | arXiv, cond-mat/9710313 | | Services: | Forum | Review | PDF | Favorites | |
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