Reflectionless Potentials and PT Symmetry

Details Reflectionless Potentials and PT Symmetry Reflectionless Potentials and PT Symmetry

2005-08-16

arxiv.org/abs/quant-ph/0508117v1

J.Phys.A38:L627-L630,2005

Physics

Quantum Physics

4 Pages

Scientific paper

10.1088/0305-4470/38/39/L01

Large families of Hamiltonians that are non-Hermitian in the conventional sense have been found to have all eigenvalues real, a fact attributed to an unbroken PT symmetry. The corresponding quantum theories possess an unconventional scalar product. The eigenvalues are determined by differential equations with boundary conditions imposed in wedges in the complex plane. For a special class of such systems, it is possible to impose the PT-symmetric boundary conditions on the real axis, which lies on the edges of the wedges. The PT-symmetric spectrum can then be obtained by imposing the more transparent requirement that the potential be reflectionless.

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