Dispersion relations in finite-boost DSR

• Main Authors: Nosratollah Jafari, Michael R.R. Good
• Format: Article
• Language: English
• Published: Elsevier 2020-10-01
• Series: Physics Letters B
• Online Access: http://www.sciencedirect.com/science/article/pii/S0370269320305384

We find finite-boost transformations DSR theories in first order of the Planck length lp, by solving differential equations for the modified generators. We obtain corresponding dispersion relations for these transformations, which help us classify the DSR theories via four types. The final type of our classification has the same special relativistic dispersion relation but the transformations are not Lorentz. In DSR theories, the velocity of photons is generally different from the ordinary speed c and possess time delay, however in this new DSR light has the same special relativistic speed with no delay. A special case demonstrates that any search for quantum gravity effects in observations which gives a special relativistic dispersion relation is consistent with DSR.