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Abstract: Non-Hermitian Hamiltonians H possess the real i.e., observable spectrainside certain specific domains of parameters D. In general, the determinationof their observability-horizon boundaries is difficult. We list thepseudo-Hermitian real N by N matrix Hamiltonians for which the prototypehorizons are defined by closed analytic formulae.



Author: Miloslav Znojil

Source: https://arxiv.org/







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