Chiral Cherenkov and chiral transition radiation in anisotropic matter

Abstract

A significant contribution to the electromagnetic radiation by a fast electric charge moving in anisotropic chiral matter arises from spontaneous photon radiation due to the chiral anomaly. While such a process, also known as the "vacuum Cherenkov radiation", is forbidden in the QED vacuum, it can occur in chiral matter, where it is more appropriate to call it the "chiral Cherenkov radiation". Its contribution to the radiation spectrum is of order ${\alpha }^2$ compared to ${\alpha }^3$ of the bremsstrahlung. I derive the frequency spectrum and the angular distribution of this radiation in the high energy limit. The quantum effects due to the hard photon emission and the fermion mass are taken into account. The obtained spectra are analyzed in the case the quark-gluon plasma and a Weyl semimetal.

13 pages, 6 figures

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Cited by in corpus (8)

• Probability of radiation of twisted photons in an inhomogeneous isotropic dispersive medium
• Electromagnetic Radiation in chiral matter: the Cherenkov case
• Collisional energy loss and the Chiral Magnetic Effect
• Photon radiation in hot nuclear matter by means of chiral anomalies
• Bremsstrahlung in chiral medium: anomalous magnetic contribution to the Bethe-Heitler formula
• Magnetic Weyl semimetals as a source of circularly polarized THz radiation
• Chiral Cherenkov radiation in the presence of a time-dependent chiral chemical potential
• Dynamical Effects from Anomaly: Modified Electrodynamics in Weyl Semimetal