2016/04/28 by Vincenzo Branchina, Manlio De Domenico, Branchina, Vincenzo +1 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Pulsars and Gravitational Waves Research #astro-ph.HE #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.1604.08530
14 pages, 4 figures
arxiv created 2016/04/28 · openalex publication_date 2016/04/28 · arxiv updated 2016/05/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Assuming that the short gamma-ray burst detected by the Fermi Gamma-Ray Space Telescope about 0.4 seconds after the gravitational waves observed by the LIGO and VIRGO Collaborations originated from the same black hole merger event, we perform a model-independent analysis of different quantum gravity scenarios based on (modified) dispersion relations (typical of quantum gravity models) for the graviton and the photon. We find that only scenarios where at least one of the two particles is luminal (the other being sub- or super-luminal) are allowed, while scenarios where none of the two particles is luminal are ruled out. Moreover, the physical request of having acceptable values for the quantum gravity scale imposes stringent bounds on the difference between the velocities of electromagnetic and gravitational waves, much more stringent than any previously known bound.