Low-high voltage duality in tunneling spectroscopy of the Sachdev-Ye-Kitaev model

  title={Low-high voltage duality in tunneling spectroscopy of the Sachdev-Ye-Kitaev model},
  author={Nikolay V. Gnezdilov and Jimmy A. Hutasoit and C. W. J. Beenakker},
  journal={Physical Review B},
The Sachdev-Ye-Kitaev (SYK) model describes a strongly correlated metal with all-to-all random interactions (average strength $J$) between $N$ fermions (complex Dirac fermions or real Majorana fermions). In the large-$N$ limit a conformal symmetry emerges that renders the model exactly soluble. Here we study how the non-Fermi liquid behavior of the closed system in equilibrium manifests itself in an open system out of equilibrium. We calculate the current-voltage characteristic of a quantum dot… 

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