A. Erdas et al., MAGNETIC-PROPERTIES OF NEUTRINOS IN HIGH-TEMPERATURE SU(2)(L)CIRCLE-TIMES-U(1) GAUGE-THEORY, Physics letters. Section B, 406(4), 1997, pp. 347-354
We calculate the finite temperature self-energy for neutrinos in the p
resence of a constant magnetic field in a medium in the unbroken SU(2)
x U(1) model, We obtain the exact dispersion relation for such neutri
nos and find that the thermal effective mass is modified by the magnet
ic field, We also find a simple analytic expression for the dispersion
relation and obtain the index of refraction for large neutrino moment
um. (C) 1997 Elsevier Science B.V.