Abstract
We show that the Proca equation in vacuum, as well as its plausible modifications in dielectric media, is incompatible with experimental evidence, no matter how small the Proca mass is.
- Received 18 March 2022
- Revised 21 December 2022
- Accepted 6 February 2023
DOI:https://doi.org/10.1103/PhysRevD.107.056013
© 2023 American Physical Society
Physics Subject Headings (PhySH)
Particles & Fields