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arXiv:cond-mat/0012266

Charge and spin separation in the 1D Hubbard model

V. E. Korepin, I. Roditi

Published Dec 14, 2000• 1 citation
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Abstract

We consider the repulsive Hubbard model in one dimension and show the different mechanisms present in the charge and spin separation phenomena for an electron, at half filling and bellow half filling. We also comment recent experimental results.
DOI
10.48550/arxiv.cond-mat/0012266

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The question of spin-charge separation in two-dimensional lattices has been addressed by numerical simulations of the motion of one hole in a half-filled band. The calculations have been performed on finite clusters with Hubbard and t-J models. By comparing the time evolution of spin and charge polarization currents in one and two dimensions, evidence in favor of spin-charge separation in two dimensions is presented. In contrast with this, spin-charge separation is absent in a highly doped, metallic, system.
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