37 citations · 146 across the 12 of their papers we have counts for
4 papers · 1 filter
LHAASO discovery of highest-energy photons towards new physics
Chengyi Li, Bo-Qiang Ma
Ultrahigh-energy photons up to 1.4 peta-electronvolts have been observed by new cosmic-ray telescope in China -- a hint that Lorentz invariance might break down at the Planck-scale…
Light Speed Variation with Brane/String-Inspired Space-Time Foam
Chengyi Li, Bo-Qiang Ma
Recently a series of studies on high energy gamma-ray burst~(GRB) photons suggest a light speed variation with linear energy dependence at the Lorentz violation scale of $3.6 \time…
Ultrahigh-energy photons from LHAASO as probes of Lorentz symmetry violations
Chengyi Li, Bo-Qiang Ma
The Large High Altitude Air Shower Observatory~(LHAASO) is one of the most sensitive gamma-ray detector arrays currently operating at TeV and PeV energies. Recently the LHAASO expe…
Light Speed Variation in a String Theory Model for Space-Time Foam
Chengyi Li, Bo-Qiang Ma
We revisit a supersymmetric string model for space-time foam, in which bosonic open-string states, such as photons, can possess quantum-gravity-induced velocity fluctuations in vac…