Quantum Critical Response at the Onset of Spin Density Wave Order in Two-dimensional Metals

  title={Quantum Critical Response at the Onset of Spin Density Wave Order in Two-dimensional Metals},
  author={Sean A. Hartnoll and Diego M. Hofman and Max A. Metlitski and Subir Sachdev},
  journal={Physical Review B},
We study the frequency dependence of the electron self energy and the optical conductivity in a recently developed eld theory of the spin density wave quantum phase transition in twodimensional metals. We focus on the interplay between the Fermi surface ‘hot spots’ and the 
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