Author

E. Fradkin

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Preprint Aug 2026

Chern insulator boundary criticality

We investigate signatures of chirality at Chern insulator transitions in the presence of a boundary. The transition between a trivial insulator and a Chern insulator with Chern number $C=1$ is described by a massless Dirac fermion whose parity anomaly gives a critical Hall conductivity $\sigma_{xy}=\frac{1}{2}\frac{e^2...

Benjamin Moy, E. Fradkin · 1 citation