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quant-ph2012★ 19 cited
Spectral singularity and deep multiple minima in the reflectivity in non-Hermitian (complex) Ginocchio potential
Ananya Ghatak, Bhabani Prasad Mandal, Zafar Ahmed
We bring out the existence of at most one spectral singularity (SS) and deep multiple minima in the reflectivity of the non-Hermitian (complex) Ginocchio potential. We find a param…
quant-ph2012★ 30 cited
Reciprocity and unitarity in scattering from a non-Hermitian complex PT-symmetric potential
Zafar Ahmed
In quantum scattering, Hermiticity is necessary for both reciprocity and unitarity. Reciprocity means that both reflectivity (R) and transmitivity (T) are insensitive to the direct…