LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies
General Relativity and Quantum Cosmology
2025-02-24 v1 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Our present contribution sets out to investigate how combined effects of Lorentz-symmetry violation (LSV) and Loop-Quantum-Gravity(LQG)-modified photon dispersion relations affect the threshold anomaly of cosmic photons. The point of departure is the post-Maxwellian version of Electromagnetism induced by LQG effects. We then consider the problem of gamma-ray attenuation by the Extragalactic Background Light (EBL) and the Cosmic Microwave Background Radiation (CMB) dominated by the Breit-Wheeler Effect. By following this path, we aim at the establishment of a new bridge between LSV and astrophysical phenomena in the framework of LQG.
Keywords
Cite
@article{arxiv.2502.14927,
title = {LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies},
author = {P. A. L. Mourão and G. L. L. W. Levy and J. A. Helayël-Neto},
journal= {arXiv preprint arXiv:2502.14927},
year = {2025}
}
Comments
7 pages, 2 figures