Existence of Different Intermediate Hamiltonians in Type A N-fold Supersymmetry

Details Existence of Different Intermediate Hamiltonians in Type A N-fold Supersymmetry Existence of Different Intermediate Hamiltonians in Type A N-fold Supersymmetry

2009-05-27

arxiv.org/abs/0905.4330v2

Annals Phys.324:2438-2451,2009

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, no figures; minor corrections, to appear in Annals of Physics

Scientific paper

10.1016/j.aop.2009.08.002

Type A N-fold supercharge admits a one-parameter family of factorizations into product of N first-order linear differential operators due to an underlying GL(2,C) symmetry. As a consequence, a type A N-fold supersymmetric system can have different intermediate Hamiltonians corresponding to different factorizations. We derive the necessary and sufficient conditions for the latter system to possess intermediate Hamiltonians for the N=2 case. We then show that whenever it has (at least) one intermediate Hamiltonian, it can admit second-order parasupersymmetry and a generalized 2-fold superalgebra. As an illustration, we construct a set of generalized Poeschl--Teller potentials of this kind.

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