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arXiv · 2204.02956

Testing Lorentz invariance of electrons with LHAASO observations of PeV gamma-rays from the Crab Nebula

Chengyi Li·Bo-Qiang Ma
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Abstract

The Large High Altitude Air Shower Observatory~(LHAASO) recently reported the detection of gamma-ray emissions with energies up to $1.1~\textrm{PeV}$ from the Crab Nebula. Using the absence of vacuum Cherenkov effect by inverse-Compton electrons, we improve previous bounds to linear-order Lorentz invariance violation (LV) in the dispersion relations of electrons by $10^{4}$ times. We show that the LV effect on electrons is severely constrained, compatible with certain type of LV as expected by some models of quantum gravity~(QG), such as the string/D-brane inspired space-time foam. We argue that such models are supported by the Crab Nebula constraints from the LHAASO observations, as well as various LV phenomenologies for photons to date.

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Chengyi Li, Bo-Qiang Ma. 2022-04-06. Testing Lorentz invariance of electrons with LHAASO observations of PeV gamma-rays from the Crab Nebula. https://doi.org/10.1016/j.physletb.2022.137034

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