
TL;DR
This paper reviews the possibility of a tiny photon mass, discusses experimental tests including Lorentz symmetry violations, and suggests existing high-energy astrophysical observations might already indicate such effects.
Contribution
It provides a comprehensive review of experimental tests for photon mass and explores potential evidence from high-energy cosmic phenomena.
Findings
Photon mass could be compatible with current experimental limits
High-energy gamma ray and cosmic ray tests may indicate Lorentz violations
Existing astrophysical data might already suggest a non-zero photon mass
Abstract
We review the case for the photon having a tiny mass compatible with the experimental limits. We go over some possible experimental tests for such a photon mass including the violation of Lorentz symmetry. We point out that such violations may already have been witnessed in tests involving high energy gamma rays from outer space as also ultra high energy cosmic rays.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsNoncommutative and Quantum Gravity Theories · Relativity and Gravitational Theory · Radioactive Decay and Measurement Techniques
