期刊
PRAMANA-JOURNAL OF PHYSICS
卷 73, 期 2, 页码 241-249出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12043-009-0115-7
关键词
Perturbation theory; PT symmetry; periodic potentials
We generalize some recently established criteria for the reality and non-reality of the spectrum of some classes of PT-symmetric Schrodinger operators. The criteria include cases of discrete spectra and continuous ones.
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