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math.HO2014
A solution to Ahmed's Integral(II)
Dona Ghosh
In the year 2000, Ahmed proposed a family of integrals in the American Mathematical Monthly which invoked a considerable response then. Here I would like to present another solutio…
quant-ph2014
Transparency of the PT-symmetric complex potentials for coherent injection
Zafar Ahmed, Joseph Amal Nathan, Dona Ghosh
Two port s-matrix for a complex PT-symmetric potential may have uni-modular eigenvalues. If this happens for all energies, there occurs a perfect emission of waves at both ends. We…