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- W4385681455 abstract "It has been long conjectured that a signature of Quantum Gravity will be Lorentz Invariance Violation (LIV) that could be observed at energies much lower than the Planck scale. One possible signature of LIV is an energy-dependent speed of photons. This can be tested with a distant transient source of very high-energy photons. We explore time-of-flight limits on LIV derived from LHAASO's observations of tens of thousands of TeV photons from GRB 221009A, the brightest gamma-ray burst of all time. For a linear (n=1) dependence of the photon velocity on energy, we find a lower limit on the LIV scale of 5.9 (6.2) E_pl for subluminal (superluminal) modes. These are comparable to the stringent limits obtained so far. For a quadratic model (n=2), the limits, which are currently the best available, are much lower, 5.8 (4.6) x 10^{-8} E_pl. Our analysis uses the publicly available LHAASO data which is only in the 0.2-7 TeV range. Higher energy data would enable us to improve these limits by a factor of 3 for $n=1$ and by an order of magnitude for $n=2$." @default.
- W4385681455 created "2023-08-09" @default.
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- W4385681455 date "2023-08-06" @default.
- W4385681455 modified "2023-10-16" @default.
- W4385681455 title "Lorentz Invariance Violation Limits from GRB 221009A" @default.
- W4385681455 doi "https://doi.org/10.48550/arxiv.2308.03031" @default.
- W4385681455 hasPublicationYear "2023" @default.
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