Conditional observability |
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Authors: | Miloslav Znojil |
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Affiliation: | aNuclear Physics Institute ASCR, 250 68 Řež, Czech Republic |
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Abstract: | For a quantum Hamiltonian H=H(λ), the observability of the energies E may be robust (whenever all E are real at all λ) or, otherwise, conditional. Using a pseudo-Hermitian family of N-state chain models H=H(N)(λ) we discuss some generic properties of conditionally observable spectra. |
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