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One-Electron Singular Branch Lines of the Hubbard Chain

J. M. P. Carmelo·K. Penc·L. M. Martelo·P. D. Sacramento·J. M. B. Lopes dos Santos·R. Claessen·M. Sing·U. Schwingenschlögl
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Abstract

The momentum and energy dependence of the weight distribution in the vicinity of the one-electron spectral-function singular branch lines of the 1D Hubbard model is studied for all values of the electronic density and on-site repulsion $U$. To achieve this goal we use the recently introduced pseudofermion dynamical theory. Our predictions agree quantitatively for the whole momentum and energy bandwidth with the peak dispersions observed by angle-resolved photoelectron spectroscopy in the quasi-1D organic conductor TTF-TCNQ.

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J. M. P. Carmelo, K. Penc, L. M. Martelo, P. D. Sacramento, J. M. B. Lopes dos Santos, R. Claessen, M. Sing, U. Schwingenschlögl. 2004-04-27. One-Electron Singular Branch Lines of the Hubbard Chain. https://doi.org/10.1209/epl%2Fi2004-10111-0

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