Higher-order exceptional points in composite non-Hermitian systems

We show that a composite quantum system described by the tensor product of multiple systems each with a leading-order exceptional point (a non-Hermitian degeneracy at which not only eigenvalues but also eigenstates coalesce) exhibits a single leading-order exceptional point, whose order surpasses th...

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Bibliographic Details
Main Authors: Jan Wiersig, Weijian Chen
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/tmw5-fcph
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