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arXiv 1003.1434hep-thquant-ph
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磁涡旋场中自旋1/2粒子的超对称性及任意子

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

Francisco Correa, Horacio Falomir, Vit Jakubsky, Mikhail S. Plyushchay

摘要:

在垂直磁场作用下,自旋为1/2的量子非相对论平面系统具有N=2超对称性。我们考虑这样一个系统中的磁场涡旋,并发现只有两个自伴扩展的哈密顿量是兼容的标准N=2超对称。我们表明,只有在这两种情况下,一个子系统符合原来的无自旋Aharonov-Bohm模型,并伴随着超伙伴哈密顿量,允许奇异行为的波函数。我们发现一个家庭的额外的,非局部积分的运动和治疗他们一起与当地的超荷统一框架的三超对称性。动力学共形对称的引入导致了一个无限生成超代数,它包含了超共形OSP(2)的几个表示|2)对称性。我们提出的应用框架中的两体模型的相同的任意子的结果。讨论了任意子的非平凡接触相互作用和新出现的N=2线性和非线性超对称性。

英文摘要:

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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