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arXiv · 2603.19442

Symmetry-protected Interface Modes Bifurcated from Double Dirac Cones

Habib Ammari·Jiayu Qiu
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Abstract

We rigorously prove the existence of interface modes in a sharp interface model, which bifurcate from the double Dirac cone as a consequence of the band inversion induced by super-symmetry breaking. The exact number of interface modes are determined. The proof is based on a discrete version of the layer-potential framework. Moreover, we prove that such interface modes are symmetry-protected against perturbations that respect the reflection symmetry.

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Habib Ammari, Jiayu Qiu. 2026-03-19. Symmetry-protected Interface Modes Bifurcated from Double Dirac Cones. https://arxiv.org/abs/2603.19442

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