Zero width resonance (spectral singularity) in a complex PT-symmetric potential
作者： Zafar Ahmed
DOI: 10.1088/1751-8113/42/47/472005
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摘要: We show that the complex PT-symmetric potential V(x) = −V1 sech2x + iV2 sech xtanh x entails a single zero-width resonance (spectral singularity) when and positive resonant energy is given as .
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