TL;DR
This paper discusses the special gauge symmetry of charged spin-1 fields interacting with electromagnetism, emphasizing the significance of a gyromagnetic ratio of 2 for maintaining gauge invariance.
Contribution
It highlights the unique gauge symmetry condition for spin-1 fields with gyromagnetic ratio 2 in electromagnetic interactions.
Findings
Spin-1 fields with g=2 exhibit a non-electromagnetic gauge symmetry.
The gauge symmetry is linked to the gyromagnetic ratio being exactly 2.
This condition is crucial for consistent interactions with vacuum electromagnetism.
Abstract
Charged matter spin-1 fields enjoy a nonelectromagnetic gauge symmetry when interacting with vacuum electromagnetism, provided their gyromagnetic ratio is 2.
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