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An alternative formulation of classical electromagnetic duality

Kang Li, Carlos M. Naón

hep-tharXiv:hep-th/0009116

Abstract

By introducing a doublet of electromagnetic four dimensional vector potentials, we set up a manifestly Lorentz covariant and SO(2) duality invariant classical field theory of electric and magnetic charges. In our formulation one does not need to introduce the concept of Dirac string.

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