Indian Academy of Sciences
E Caliceti
Articles written in Pramana – Journal of Physics
Volume 73 Issue 2 August 2009 pp 241-249
Reality and non-reality of the spectrum of $\mathcal{PT}$-symmetric operators: Operator-theoretic criteria
E Caliceti S Graffi
We generalize some recently established criteria for the reality and non-reality of the spectrum of some classes of $\mathcal{PT}$-symmetric Schrödinger operators. The criteria include cases of discrete spectra and continuous ones.
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