76073 20190110111045.0 doi 10.22323/1.318.0158 sideral 109230 ART-2018-109230 eng (orcid)0000-0003-1130-3982 Relancio, J.J. Universidad de Zaragoza Does a deformation of special relativity imply energy dependent photon time delays? 2018 Access copy available to the general public Unrestricted Theoretical arguments in favor of energy dependent photon time delays from a modification of special relativity (SR) have met with recent gamma ray observations that put severe constraints on the scale of such deviations. We review the case of the generality of this theoretical prediction in the case of a deformation of SR and find that, at least in the simple model based on the analysis of photon worldlines which is commonly considered, there are many scenarios compatible with a relativity principle which do not contain a photon time delay. This will be the situation for any modified dispersion relation which reduces to E=|p⃗ | for photons, independently of the quantum structure of spacetime. This fact opens up the possibility of a phenomenologically consistent relativistic generalization of SR with a new mass scale many orders of magnitude below the Planck mass. info:eu-repo/grantAgreement/ES/DGA/E24-2 info:eu-repo/grantAgreement/ES/MINECO/FPA2015-65745-P info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0003-2264-2306 Carmona, J.M. Universidad de Zaragoza (orcid)0000-0002-8282-3435 Cortés, J.L. Universidad de Zaragoza 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 318 (2018), 158 [10 pp.] Pos proc. sci. Pos proceedings of science 1824-8039 239834 http://zaguan.unizar.es/record/76073/files/texto_completo.pdf Versión publicada 53311 http://zaguan.unizar.es/record/76073/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:76073 articulos driver 2019-01-10-10:39:13 ARTICLE