Non-chiral ephemeral edge states and cascading of exceptional points in the non-reciprocal Haldane model

Aditi A. Prabhudesai, H. S. Chhabra, Suraj S. Hegde

We study a variant of the Haldane honeycomb model that has non-reciprocal hoppings between the next-nearest neighbours. The system on a torus hosts time-reversal symmetry protected…