Cancellation of quantum anomalies and bosonization of three-dimensional time-reversal symmetric topological insulators

@article{Zirnstein2013CancellationOQ,
  title={Cancellation of quantum anomalies and bosonization of three-dimensional time-reversal symmetric topological insulators},
  author={Heinrich-Gregor Zirnstein and B. Rosenow},
  journal={Physical Review B},
  year={2013},
  volume={88},
  pages={085105}
}
  • Heinrich-Gregor Zirnstein, B. Rosenow
  • Published 2013
  • Physics
  • Physical Review B
  • The strong time-reversal symmetric (TRS) topological insulator (TI) in three space dimensions features gapless surface states in the form of massless Dirac fermions. We study these surface states with the method of bosonization, and find that the resulting bosonic theory has a topological contribution due to the parity anomaly of the surface Dirac fermions. We argue that the presence of a quantum anomaly is, in fact, the main reason for the existence of a surface state, by the principle that… CONTINUE READING
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