Astrophysical Tests of Modifications to the Symmetry of Special Relativity
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 8142
Special Issue Editors
Special Issue Information
Dear colleagues,
The continuously increasing quantity of experimental data from cosmic messengers (gamma rays, cosmic rays, neutrinos, joined now by gravitational waves) that has become available in recent times, has allowed us to test deviations from special relativity at very high energies, as a possible phenomenological consequence of quantum gravity.
From the theory side, there are two different scenarios: a violation versus a deformation of special relativity. These scenarios produce different predictions with respect to the type and the magnitude of the possible effects: modification in particle reaction thresholds, new energy loss mechanisms, time delays in the propagation over cosmic distances, etc.
From the experimental side, the situation is rather intriguing, with a possible cutoff in the cosmic neutrino spectrum that could be explained by unstable neutrinos, or the strong bounds in photon time delays that are been recently challenged by the new analysis of a number of gamma ray bursts. The confirmation of the GZK cutoff of cosmic rays, which is a direct consequence of special relativity, also contains subtleties that are being examined at the moment. Finally, the detection of gravitational waves has provided the opportunity to search for modifications to special relativity in a new type of messenger and has also originated the beginning of a real multi-messenger astronomy.
In this Special Issue on the astrophysical tests of modifications to the symmetry of special relativity we welcome contributions on both theoretical and experimental aspects in this rapidly evolving field.
Prof. Dr. Jose Luis Cortes
Prof. Dr. Jose Manuel Carmona
Guest Editors
Manuscript Submission Information
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Keywords
- tests of special relativity
- cosmic messengers
- doubly special relativity
- Lorentz invariance violation
- standard model extension
