Optical Conductivity with Holographic Lattices

Details Optical Conductivity with Holographic Lattices Optical Conductivity with Holographic Lattices

2012-04-02

arxiv.org/abs/1204.0519v1

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, 10 figures

Scientific paper

We add a gravitational background lattice to the simplest holographic model of matter at finite density and calculate the optical conductivity. With the lattice, the zero frequency delta function found in previous calculations (resulting from translation invariance) is broadened and the DC conductivity is finite. The optical conductivity exhibits a Drude peak with a cross-over to power-law behavior at higher frequencies. Surprisingly, these results bear a strong resemblance to the properties of some of the cuprates.

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