We add a periodic potential to the simplest gravitational model of a superconductor and compute the optical conductivity. In addition to a superfluid component, we find a normal component that has Drude behavior at low frequency followed by a power law fall-off. Both the exponent and coefficient of the power law are temperature independent and agree with earlier results computed above T c. These results are in striking agreement with measurements on some cuprates. We also find a gap Δ = 4.0 T c, a rapidly decreasing scattering rate, and "missing spectral weight" at low frequency, all of which also agree with experiments. © 2013 SISSA, Trieste, Italy.
CITATION STYLE
Horowitz, G. T., & Santos, J. E. (2013). General relativity and the cuprates. Journal of High Energy Physics, 2013(6). https://doi.org/10.1007/JHEP06(2013)087
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