Optical conductivity of one-dimensional doped Hubbard-Mott insulator

Details Optical conductivity of one-dimensional doped Hubbard-Mott insulator Optical conductivity of one-dimensional doped Hubbard-Mott insulator

2002-03-13

arxiv.org/abs/cond-mat/0203273v2

PRB 66, 073105 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 EPS figures, REVTEX 4, a final version

Scientific paper

10.1103/PhysRevB.66.073105

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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