Matrix Hamiltonians: SUSY approach to hidden symmetries

Details Matrix Hamiltonians: SUSY approach to hidden symmetries Matrix Hamiltonians: SUSY approach to hidden symmetries

1997-07-02

arxiv.org/abs/quant-ph/9707004v1

J.Phys.A30:5037-5050,1997

Physics

Quantum Physics

20 pages, LaTeX

Scientific paper

10.1088/0305-4470/30/14/015

A new supersymmetric approach to the analysis of dynamical symmetries for matrix quantum systems is presented. Contrary to standard one dimensional quantum mechanics where there is no role for an additional symmetry due to nondegeneracy, matrix hamiltonians allow for non-trivial residual symmetries. This approach is based on a generalization of the intertwining relations familiar in SUSY Quantum Mechanics. The corresponding matrix supercharges, of first or of second order in derivatives, lead to an algebra which incorporates an additional block diagonal differential matrix operator (referred to as a "hidden" symmetry operator) found to commute with the superhamiltonian. We discuss some physical interpretations of such dynamical systems in terms of spin 1/2 particle in a magnetic field or in terms of coupled channel problem. Particular attention is paid to the case of transparent matrix potentials.

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