SUSY Quantum Mechanics with Complex Superpotentials and Real Energy Spectra

Details SUSY Quantum Mechanics with Complex Superpotentials and Real Energy Spectra SUSY Quantum Mechanics with Complex Superpotentials and Real Energy Spectra

1998-06-05

arxiv.org/abs/quant-ph/9806019v1

Int.J.Mod.Phys. A14 (1999) 2675-2688

Physics

Quantum Physics

22 pages, Latex

Scientific paper

10.1142/S0217751X99001342

We extend the standard intertwining relations used in Supersymmetrical (SUSY) Quantum Mechanics which involve real superpotentials to complex superpotentials. This allows to deal with a large class of non-hermitean Hamiltonians and to study in general the isospectrality between complex potentials. In very specific cases we can construct in a natural way "quasi-complex" potentials which we define as complex potentials having a global property such as to lead to a Hamiltonian with real spectrum. We also obtained a class of complex transparent potentials whose Hamiltonian can be intertwined to a free Hamiltonian. We provide a variety of examples both for the radial problem (half axis) and for the standard one-dimensional problem (the whole axis), including remarks concerning scattering problems.

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