Abstract
We extend the pseudoparticle transport description of the Hubbard chain to all energy scales. In particular we compute the mean value of the electric current transported by any Bethe-ansatz state and the transport masses of the charge carriers. We present numerical results for the optical conductivity of the model at half-filling for values of U/t = 3 and 4. We show that these are in good agreement with the pseudoparticle description of the finite-energy transitions involving new pseudoparticle energy bands.
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Peres, N.M.R., Carmelo, J.M.P., Campbell, D.K. et al. Pseudoparticle description of the 1D Hubbard model electronic transport properties. Z. Phys. B - Condensed Matter 103, 217–220 (1996). https://doi.org/10.1007/s002570050362
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DOI: https://doi.org/10.1007/s002570050362