Addendum: Ultrahigh-energy cosmic-ray bounds on nonbirefringent modified-Maxwell theory
Jun, 2008Citations per year
Abstract: (arXiv)
Nonbirefringent modified-Maxwell theory, coupled to standard Dirac particles, involves nine dimensionless parameters, which can be bounded by the inferred absence of vacuum Cherenkov radiation for ultrahigh-energy cosmic rays (UHECRs). With selected UHECR events, two-sided bounds on the eight nonisotropic parameters are obtained at the 10^{-18} level, together with an improved one-sided bound on the single isotropic parameter at the 10^{-19} level.- 41.60.Bq
- 98.70.Sa
- 11.30.Cp
- 12.20.-m
- violation: Lorentz
- cosmic radiation: UHE
- radiation: Cherenkov
- Maxwell equation
- quantum electrodynamics
- numerical calculations
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