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Supersymmetry and Exceptional Points
The phenomenon of degeneracy of energy levels is often attributed either to an underlying (super)symmetry (SUSY), or to the presence of a Kato exceptional point (EP). In our paper a conceptual bridge between the two notions is proposed to be provided by the recent upgrade of the basic principles of...
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Published in: | Symmetry (Basel) 2020-06, Vol.12 (6), p.892 |
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description | The phenomenon of degeneracy of energy levels is often attributed either to an underlying (super)symmetry (SUSY), or to the presence of a Kato exceptional point (EP). In our paper a conceptual bridge between the two notions is proposed to be provided by the recent upgrade of the basic principles of quantum theory called, equivalently, PT − symmetric or three-Hilbert-space (3HS) or quasi-Hermitian formulation in the current physical literature. Although the original purpose of the 3HS approach laid in the mere simplification of technicalities, it is shown here to serve also as a natural theoretical link between the apparently remote concepts of EPs and SUSY. An explicit illustration of their close mutual interplay is provided by the description of infinitely many supersymmetric, mutually non-equivalent and EP-separated regularized spiked harmonic oscillators. |
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subjects | Energy levels Equivalence Harmonic oscillators hiddenly Hermitian quantum Hamiltonians hiddenly Hermitian supersymmetries Hilbert space infinite family of regularized harmonic oscillators Kato exceptional points Physics Quantum field theory Quantum physics Quantum theory regularized singular potentials Supersymmetry Symmetry |
title | Supersymmetry and Exceptional Points |
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