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Helayël-Neto, José A.; Spallicci, Alessandro D. A. M.
European physical journal. C, Particles and fields, 07/2019, Letnik: 79, Številka: 7Journal Article
In the presence of Lorentz Symmetry Violation (LSV) associated with the Standard-Model Extension (SME), we have recently shown the non-conservation of the energy-momentum tensor of a light-wave crossing an Electro-Magnetic (EM) background field even when the latter and the LSV are constant. Incidentally, for a space-time dependent LSV, the presence of an EM field is not necessary. Herein, we infer that in a particle description, the energy non-conservation for a photon implies violation of frequency invariance in vacuo , giving rise to a red or blue shift. We discuss the potential consequences on cosmology.
