Optical conductivity with holographic lattices

Article

DOI: 10.1007/JHEP07(2012)168

Cite this article as:
Horowitz, G.T., Santos, J.E. & Tong, D. J. High Energ. Phys. (2012) 2012: 168. doi:10.1007/JHEP07(2012)168

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.

Keywords

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

Copyright information

© SISSA, Trieste, Italy 2012

Authors and Affiliations

  • Gary T. Horowitz
    • 1
  • Jorge E. Santos
    • 1
  • David Tong
    • 2
  1. 1.Department of PhysicsUCSBSanta BarbaraUSA
  2. 2.DAMTPUniversity of CambridgeCambridgeUK

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