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Optical conductivity of the infinite-dimensional Hubbard model

M. Jarrell·J. K. Freericks·Th. Pruschk
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Abstract

A Monte Carlo-maximum entropy calculation of the optical conductivity of the infinite-dimensional Hubbard model is presented. We show that the optical conductivity displays the anomalies found in the cuprate superconductors, including a Drude width which grows linearly with temperature, a Drude weight which grows linearly with doping, and a temperature and doping-dependent mid-IR peak. These anomalies arise as a consequence of the dynamical generation of a quasiparticle band at the Fermi energy as T -> 0, and are a generic property of the strongly correlated Hubbard model in all dimensions greater than one.

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M. Jarrell, J. K. Freericks, Th. Pruschk. 1994-12-16. Optical conductivity of the infinite-dimensional Hubbard model. https://doi.org/10.1103/physrevb.51.11704

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