Finite Duration and Energy Effects in Lorentz-Violating Vacuum Cerenkov Radiation
arXiv:0709.4478 · doi:10.1016/j.nuclphysb.2007.12.012
Abstract
Vacuum Cerenkov radiation is possible in certain Lorentz-violating quantum field theories, when very energetic charges move faster than the phase speed of light. In the presence of a CPT-even, Lorentz-violating modification of the photon sector, the character of the Cerenkov process is controlled by the high-frequency behavior of the radiation spectrum. The development of the Cerenkov process can be markedly different, depending on whether the only limits on the emission of very energetic photons come from energy-momentum conservation or whether there are additional effects that cut off the spectrum at high frequencies. Moreover, since the high-frequency cutoff determines the total rate at which an emitting charge loses energy, it also controls all aspects of the emission that are related to the process's finite duration.
15 pages
References in corpus (5)
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Cited by in corpus (8)
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- Ultrahigh-energy cosmic-ray bounds on nonbirefringent modified-Maxwell theory
- Limits on isotropic Lorentz violation in QED from collider physics
- Lorentz-violating contributions of the Carroll-Field-Jackiw model to the CMB anisotropy
- Classical solutions for the Lorentz-violating and CPT-even term of the Standard Model Extension
- Classical solutions for the Carroll-Field-Jackiw-Proca electrodynamics
- Stationary solutions for the parity-even sector of the CPT-even and Lorentz-covariance-violating term of the standard model extension
- Emission and absorption of photons and the black-body spectra in Lorentz-odd Electrodynamics