期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
卷 37, 期 43, 页码 10167-10177出版社
IOP PUBLISHING LTD
DOI: 10.1088/0305-4470/37/43/010
关键词
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A real band condition is shown to exist for one-dimensional periodic complex non-Hermitian potentials exhibiting PE-symmetry. We use an exactly solvable ultralocal periodic potential to obtain the band structure and discuss some spectral features of the model, specially those concerning the role of the imaginary parameters of the couplings. Analytical results as well as some numerical examples are provided.
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