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cond-mat.mes-hall2026
Exceptional-Point Geometry of Weak Topological Boundary States
Rafael A. Molina, Kevin González, Pedro A. Orellana
In this article, we demonstrate that weak topology can be formulated geometrically in terms of exceptional singularities of an analytically continued Bloch Hamiltonian. A general p…
quant-ph2026
Topological states and flat bands induced by bound states in the continuum in a ladder-shaped one-dimensional photonic crystal
Sofía Pinto, P. A. Orellana, Sergio Bravo
One-dimensional crystals serve as a versatile platform for engineering nontrivial states, which can be easily explored in transport configurations. In this work, we analyze the pro…