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Testing Lorentz invariance of electrons with LHAASO observations of PeV gamma-rays from the Crab Nebula
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Testing Lorentz invariance of electrons with LHAASO observations of PeV gamma-rays from the Crab Nebula
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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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Cited by 1 Pith paper
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Is There New Physics Beyond 30 TeV in the BOAT?
Under quadratic subluminal Lorentz invariance violation, GRB 221009A's spectrum should show a flux recovery above ~30 TeV; the paper motivates a targeted LHAASO search but performs no data analysis.
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