Neutrino-electron processes in a dense maqnetized plasma

The neutrino-electron processes in a dense strongly degenerate magnetized plasma are analyzed in the framework of the Standard Model. The total probability and the mean values of the neutrino energy and momentum losses are calculated. It is shown that neutrino scattering on the excited electrons with Landau level number conservation dominates under the conditions "mu^2 > eB >> mu T" but does not give a contribution into the neutrino force acting on plasma along the magnetic field.Comment: 7 pages, LATEX, to appear in Modern Physics Letters

Fermion dispersion in axion medium

The interaction of a fermion with the dense axion medium is investigated for the purpose of finding an axion medium effect on the fermion dispersion. It is shown that axion medium influence on the fermion dispersion under astrophysical conditions is negligible small if the correct Lagrangian of the axion-fermion interaction is used.Comment: 5 pages, 1 figure, to appear in International Journal of Modern Physics

Familon emission by dense magnetized plasma

Emission of a familon caused by the processes $e^- \to e^- + \phi$, $e^- \to \mu^- + \phi$ in dense magnetized plasma is investigated in the model in which a familon have both direct and no direct coupling to leptons via plasmon. The process probabilities and the integral familon action on plasma are calculated. It is shown that the $P$ odd interference phenomenon in the process $e^- \to \mu^- + \phi$ leads to the familon force acting on plasma along the magnetic field.Comment: 7 pages, LATEX, to appear in Modern Physics Letters

Field-induced interaction of a pseudoscalar particle with photon in a magnetized e−e+e^-e^+ plasma

The effective interaction of a pseudoscalar particle with photon in plasma with the presence of a constant uniform magnetic field is investigated. It is shown that under some physical conditions the effective coupling between pseudoscalar particle and photon does not depend on medium parameters and particles momentum. The probability of the familon decay into photon pair in a strongly magnetized degenerate ultrarelativistic plasma is calculated.Comment: 10 pages, 2 figures. To be published in Modern Physics Letters

Neutrino magnetic moment in a magnetized plasma

The contribution of a magnetized plasma to the neutrino magnetic moment is calculated. It is shown that only part of the additional neutrino energy in magnetized plasma connecting with its spin and magnetic field strength defines the neutrino magnetic moment. It is found that the presence of magnetized plasma does not lead to the considerable increase of the neutrino magnetic moment in contrast to the results presented in literature previously.Comment: 7 page, 1 figures, based on the talk presented by E.N.Narynskaya at the XVI International Seminar Quarks'2010, Kolomna, Moscow Region, June 6-12, 2010, to appear in the Proceeding