1994/02/16 by Hong-Jian He, Zhaoming Qiu, Chia-Hsiung Tze · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #astro-ph #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1007/bf01571318
published as Z. Phys. C65 (1995) 175 · Pages: 8; Report#: VPI-IHEP-93-13
arxiv created 1994/02/16 · openalex publication_date 1995/03/01 · arxiv updated 2015/06/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We enlarge the local gauge invariance of QED from ~U(1)A~ to ~U(1)A × U(1)Θ~ by introducing another unphysical pure gauge field ~Θ~ with an independent, unphysical gauge coupling ~e~. This pure gauge field can be gauge-transformed away and the resulting theory is \it identical to standard QED. We then re-examine the Dirac quantization condition (DQC) for point monopoles and find that two essentially different DQCs can be derived. One DQC involves a gauge coupling ~e~ in the ~U(1)A~ group and the other only the unphysical gauge coupling ~e~ in the ~U(1)Θ~ group. The unique physically consistent solution of these two DQCs is a vanishing magnetic charge, which implies that no Dirac monopole exists in nature.