3 papers
gr-qc2026
Physics informed operator learning of parameter dependent spectra
Haohao Gu, Sensen He, Hanlin Song +6
Spectral problems governed by differential operators underpin a wide range of physical systems, yet remain computationally challenging because their spectra depend sensitively on c…
hep-ph2025
Constraints to Lorentz violation and ultrahigh-energy electrons in D-foamy space-times
Chengyi Li, Bo-Qiang Ma
We entertain the constraints that the absence of vacuum Cherenkov radiation of ultrahigh-energy electrons inferred from LHAASO observations of the Crab Nebula can impose on generic…
hep-ph2025
Probes for String-Inspired Foam, Lorentz, and CPT Violations in Astrophysics
Chengyi Li, Bo-Qiang Ma
Lorentz invariance is such a basic principle in fundamental physics that it must be constantly tested and that any proposal of its violation and breakdown of CPT symmetry, that mig…