A finite-dimensional 1d lattice model with a non-onsite symmetry action realizes the anomalous boundary of the 2d quantum spin-Hall insulator, including fractional domain-wall charge and Kramers parity switching under pi-flux.
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A 1d lattice model for the boundary of the quantum spin-Hall insulator
A finite-dimensional 1d lattice model with a non-onsite symmetry action realizes the anomalous boundary of the 2d quantum spin-Hall insulator, including fractional domain-wall charge and Kramers parity switching under pi-flux.