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arXiv · 0710.4444

Charge and Spin Transport in the One-dimensional Hubbard Model

Shi-Jian Gu·Nuno M. R. Peres·Jose M. P. Carmelo
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Abstract

In this paper we study the charge and spin currents transported by the elementary excitations of the one-dimensional Hubbard model. The corresponding current spectra are obtained by both analytic methods and numerical solution of the Bethe-ansatz equations. For the case of half-filling, we find that the spin-triplet excitations carry spin but no charge, while charge $η$-spin triplet excitations carry charge but no spin, and both spin-singlet and charge $η$-spin-singlet excitations carry neither spin nor charge currents.

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Shi-Jian Gu, Nuno M. R. Peres, Jose M. P. Carmelo. 2007-11-20. Charge and Spin Transport in the One-dimensional Hubbard Model. https://doi.org/10.1088/0953-8984%2F19%2F50%2F506203

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