Plasma induced fermion spin-flip conversion $f_L \to f_R + \gamma$
  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. 
A.V. Kuznetsov and N.V. Mikheev (Yaroslavl State (P.G. Demidov)   University, Russia)