Exact solution of modified Maxwell equations in a position-dependent axion model reveals threshold-free Cherenkov emission for slow charges within specific frequencies, unlike standard materials.
The Cherenkov effect in Lorentz-violating vacua
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abstract
The emission of electromagnetic radiation by charges moving uniformly in a Lorentz-violating vacuum is studied. The analysis is performed within the classical Maxwell-Chern-Simons limit of the Standard-Model Extension (SME) and confirms the possibility of a Cherenkov-type effect. In this context, various properties of Cherenkov radiation including the rate, polarization, and propagation features, are discussed, and the back-reaction on the charge is investigated. An interpretation of this effect supplementing the conventional one is given. The emerging physical picture leads to a universal methodology for studying the Cherenkov effect in more general situations.
fields
hep-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
QED scattering amplitudes in a chiral medium with constant μ5 and b0 exhibit resonant behavior in multiple processes, with computed rates for 1→2 processes determining widths of fermion and photon states.
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Revisiting Cherenkov radiation in anisotropic chiral matter: exact calculation reveals threshold-free emission
Exact solution of modified Maxwell equations in a position-dependent axion model reveals threshold-free Cherenkov emission for slow charges within specific frequencies, unlike standard materials.
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Scattering Amplitudes and Resonant Processes in QED with Chiral Chemical Potential and Chiral Magnetic Conductivity
QED scattering amplitudes in a chiral medium with constant μ5 and b0 exhibit resonant behavior in multiple processes, with computed rates for 1→2 processes determining widths of fermion and photon states.