Inconsistency of QED in the Presence of Dirac Monopoles I . 1
نویسندگان
چکیده
A precise formulation of U(1) local gauge invariance in QED is presented, which clearly shows that the gauge coupling associated with the unphysical longitudinal photon eld is non-observable and actually has an arbitrary value. We then re-examine the Dirac quantization condition (DQC) and nd that its derivation involves solely the unphysical longitudinal coupling. Hence an inconsistency inevitably arises in the presence of Dirac monopoles and this can be considered as a theoretical evidence against their existence. Work supported in part by the U.S. Department of Energy under grant DEFG05-92ER40749. Present address of H.J. He.
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ar X iv : h ep - p h / 94 02 30 1 v 1 1 6 Fe b 19 94 VPI - IHEP - 93 - 13 Inconsistency of QED in the Presence of Dirac Monopoles II
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