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arXiv · 0912.0326

The fate of 1D spin-charge separation away from Fermi points

Thomas L. Schmidt·Adilet Imambekov·Leonid I. Glazman
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Abstract

We consider the dynamic response functions of interacting one dimensional spin-1/2 fermions at arbitrary momenta. We build a non-perturbative zero-temperature theory of the threshold singularities using mobile impurity Hamiltonians. The interaction induced low-energy spin-charge separation and power-law threshold singularities survive away from Fermi points. We express the threshold exponents in terms of the spinon spectrum.

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Thomas L. Schmidt, Adilet Imambekov, Leonid I. Glazman. 2010-03-27. The fate of 1D spin-charge separation away from Fermi points. https://doi.org/10.1103/physrevlett.104.116403

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