Plasma induced fermion spin-flip conversion $f_L \to f_R + \gamma$

TL;DR

This paper investigates how medium-induced energy differences cause fermion spin-flip conversions with photon emission, emphasizing the importance of accurate dispersion relation calculations for fermions and photons.

Contribution

It provides a detailed analysis of fermion spin-flip processes considering medium effects and dispersion relations, highlighting the significance of these factors in such conversions.

Findings

Medium-induced energy differences enable fermion spin-flip conversion.

Accurate dispersion relation calculations are crucial for understanding these processes.

The study clarifies the role of electroweak interactions in medium-induced fermion transitions.

Abstract

The fermion spin-flip conversion $f_L \to f_R + \gamma$ is considered, caused by the difference of the additional energies of the electroweak origin, acquired by left- and right-handed fermions (neutrino, electron) in medium. An accurate taking account of the fermion and photon dispersion in medium is shown to be important.