PIRSA:16080045 Conference Condensed Matter

DOI10.48660/16080045

Conference/School: Low Energy Challenges for High Energy Physicists II

(2016). Superconducting quantum criticality of Dirac fermions. Perimeter Institute. https://pirsa.org/16080045

Superconducting quantum criticality of Dirac fermions. Perimeter Institute, Aug. 24, 2016, https://pirsa.org/16080045 

@misc{ pirsa_PIRSA:16080045,
  doi = {10.48660/16080045},
  url = {https://pirsa.org/16080045},
  author = {},
  keywords = {Condensed Matter, Quantum Fields and Strings},
  language = {en},
  title = {Superconducting quantum criticality of Dirac fermions},
  publisher = {Perimeter Institute},
  year = {2016},
  month = {aug},
  note = {PIRSA:16080045 see, \url{https://pirsa.org}}
}

Abstract

The semimetal-superconductor quantum phase transition of 2D Dirac fermions, such as found on the surface of a topological insulator, is conjectured to exhibit an emergent N=2 supersymmetry, based on a one-loop renormalization group analysis. In this talk I will present further evidence for this conjecture based on a three-loop analysis. Assuming the conjecture is true, I will present exact results for certain critical properties including the optical conductivity, shear viscosity, and entanglement entropy at zero temperature, as well as the finite-temperature optical conductivity.

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