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Information × Registration Number 2120U002303, Article popup.category Стаття Title popup.author popup.publication 18-08-2020 popup.source_user Український католицький університет popup.source https://hdl.handle.net/20.500.14570/2714 popup.publisher IOP Publishing Description We study the spectra of PT-symmetric Hamiltonians H that are rank-one perturbations of a self-adjoint PT-symmetric Hamiltonian H0. We show that the discrete spectrum of H may include any number of complex–conjugate pairs of complex numbers of arbitrary algebraic multiplicity. popup.nrat_date 2025-03-31 Close