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Optical conductivity with holographic lattices

Accepted version
Peer-reviewed

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Type

Article

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Authors

Horowitz, GT 
Santos, JE 

Abstract

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.

Description

Keywords

AdS-CFT Correspondence, Holography and condensed matter physics (AdS/CMT)

Journal Title

Journal of High Energy Physics

Conference Name

Journal ISSN

1126-6708
1029-8479

Volume Title

2012

Publisher

Springer Science and Business Media LLC
Sponsorship
Science and Technology Facilities Council (ST/G000581/1)
Science and Technology Facilities Council (ST/J000434/1)