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hep-th2001★ 61 cited
Spontaneous breakdown of PT symmetry in the solvable square-well model
Miloslav Znojil, Geza Levai
In many PT symmetric models with real spectra, apparently, energy levels "merge and disappear" at a point of the spontaneous PT-symmetry breaking. We argue that such an oversimplif…
quant-ph2001★ 17 cited
Anomalous doublets of states in a PT symmetric quantum model
Miloslav Znojil, Geza Levai, Pinaki Roy +1
We complexify one of the Natanzon's exactly solvable potentials in PT symmetric manner and discover that it supports the pairs of bound states with the same number of nodal zeros.…