Exceptional points and domains of unitarity for a class of strongly non-Hermitian real-matrix Hamiltonians

DOI10.1063/5.0041185zbMath1465.81034arXiv2104.11016OpenAlexW3154329357WikidataQ114103782 ScholiaQ114103782MaRDI QIDQ4991008

Miloslav Znojil

Publication date: 2 June 2021

Published in: Journal of Mathematical Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2104.11016

zbMATH Keywords

Kato's exceptional point of order

Mathematics Subject Classification ID

Eigenvalues, singular values, and eigenvectors (15A18) Perturbation theories for operators and differential equations in quantum theory (81Q15) Nonselfadjoint operator theory in quantum theory including creation and destruction operators (81Q12)

Related Items (2)

Swanson Hamiltonian: non-PT-symmetry phase ⋮ Non-standard quantum algebras and finite dimensional PT -symmetric systems

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