2007/06/22 by B. G. Sidharth, Burra G. Sidharth, Sidharth, Burra G.
Physics and Astronomy · #FOS: Physical sciences #General Physics (physics.gen-ph) #Noncommutative and Quantum Gravity Theories #Radioactive Decay and Measurement Techniques #Relativity and Gravitational Theory #physics.gen-ph
paper · pdf · doi:10.48550/arxiv.0706.3319
14 pages tex
arxiv created 2007/06/22 · openalex publication_date 2007/06/22 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
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.