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Optical conductivity of one-dimensional doped Hubbard-Mott insulator

D. N. Aristov·Vadim V. Cheianov·A. Luther
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Abstract

We study the optical response of a strongly correlated electron system near the metal-insulator transition using a mapping to the sine-Gordon model. With semiclassical quantization, the spectral weight is distributed between a Drude peak and absorption lines due to breathers. We calculate the Drude weight, the optical gap, and the lineshape of breather absorption.

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D. N. Aristov, Vadim V. Cheianov, A. Luther. 2002-08-16. Optical conductivity of one-dimensional doped Hubbard-Mott insulator. https://doi.org/10.1103/physrevb.66.073105

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