Dyon electric charge and fermion fractionalization

Details Dyon electric charge and fermion fractionalization Dyon electric charge and fermion fractionalization

1997-05-07

arxiv.org/abs/hep-th/9705041v1

Nucl.Phys. B517 (1998) 161-178

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, plain tex with macro included, 3 figures included using psfig

Scientific paper

10.1016/S0550-3213(97)00802-X

A first principles calculation of the quantum corrections to the electric charge of a dyon in an N=2 gauge theory with arbitrary gauge group is presented. These corrections arise from the fermion fields via the mechanism of fermion fractionalization. For a dyon whose magnetic charge is a non-simple co-root, the correction is a discontinuous function on the moduli space of vacua and the discontinuities occur precisely on co-dimension one curves on which the dyon decays. In this way, the complete spectrum of dyons at weak coupling is found for a theory with any gauge group. It is shown how this spectrum is consistent with the semi-classical monodromies.

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