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arXiv · 2607.01419

Vacuum Cherenkov radiation in supercritical magnetic fields

Daniel Gálvez-García·Nora Bretón
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Abstract

In the presence of very intense electromagnetic fields, the refractive index of vacuum is modified such that light velocity is less than $c$ and ultrarelativistic charged particles can be faster than light and can induce Cherenkov radiation. We present the comparison of the Cherenkov radiation produced by the Euler-Heisenberg theory for critical and supercritical magnetic fields. We also make the comparison between the Cherenkov and the synchrotron radiation produced by the charged particles.

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Daniel Gálvez-García, Nora Bretón. 2026-07-01. Vacuum Cherenkov radiation in supercritical magnetic fields. https://arxiv.org/abs/2607.01419

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