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quant-ph2025★ 3 cited
Fragmented exceptional points and their bulk and edge realizations in lattice models
Subhajyoti Bid, Henning Schomerus
Exceptional points (EPs) are spectral defects displayed by non-Hermitian systems in which multiple degenerate eigenvalues share a single eigenvector. This distinctive feature makes…
quant-ph2024
Uniform response theory of non-Hermitian systems: Non-Hermitian physics beyond the exceptional point
Subhajyoti Bid, Henning Schomerus
Non-Hermitian systems display remarkable response effects that reflect a variety of distinct spectral scenarios, such as exceptional points where the eigensystem becomes defective.…