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arXiv · hep-th/9812191

Electric Dipole Moment of a BPS Monopole

David Kastor·Euy Soo Na
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Abstract

Monopole ``superpartner'' solutions are constructed by acting with finite, broken supersymmetry transformations on a bosonic N=2 BPS monopole. The terms beyond first order in this construction represent the backreaction of the the fermionic zero-mode state on the other fields. Because of the quantum nature of the fermionic zero-modes, the superpartner solution is necessarily operator valued. We extract the electric dipole moment operator and show that it is proportional to the fermion zero-mode angular momentum operator with a gyroelectric ratio g=2. The magnetic quadrupole operator is shown to vanish identically on all states. We comment on the usefulness of the monopole superpartner solution for a study of the long-range spin dependent dynamics of BPS monopoles.

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David Kastor, Euy Soo Na. 1999-01-04. Electric Dipole Moment of a BPS Monopole. https://doi.org/10.1103/physrevd.60.025002

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