Supersymmetries of the spin-1/2 particle in the field of magnetic vortex, and anyons

Details Supersymmetries of the spin-1/2 particle in the field of magnetic vortex, and anyons Supersymmetries of the spin-1/2 particle in the field of magnetic vortex, and anyons

2010-03-07

arxiv.org/abs/1003.1434v4

Annals Phys. 325: 2653-2667 (2010)

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 1 figure, published version

Scientific paper

10.1016/j.aop.2010.06.005

The quantum nonrelativistic spin-1/2 planar systems in the presence of a perpendicular magnetic field are known to possess the N=2 supersymmetry. We consider such a system in the field of a magnetic vortex, and find that there are just two self-adjoint extensions of the Hamiltonian that are compatible with the standard N=2 supersymmetry. We show that only in these two cases one of the subsystems coincides with the original spinless Aharonov-Bohm model and comes accompanied by the super-partner Hamiltonian which allows a singular behavior of the wave functions. We find a family of additional, nonlocal integrals of motion and treat them together with local supercharges in the unifying framework of the tri-supersymmetry. The inclusion of the dynamical conformal symmetries leads to an infinitely generated superalgebra, that contains several representations of the superconformal osp(2|2) symmetry. We present the application of the results in the framework of the two-body model of identical anyons. The nontrivial contact interaction and the emerging N=2 linear and nonlinear supersymmetries of the anyons are discussed.

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