Neutrino self-energy in a magnetized medium in arbitrary $ξ$-gauge
arXiv:hep-ph/0005192 · doi:10.1016/S0370-2693(00)01207-7
Abstract
We calculate the one-loop neutrino self-energy in a magnetized plasma to all orders in the magnetic field. The calculation is done in a general gauge. We obtain the dispersion relation and effective potential for neutrinos in a CP-symmetric plasma under various conditions, and show that, while the self-energy depends on the gauge parameter $ξ$, the dispersion relation and effective potential to leading order are independent of it.
13 pages, RevTeX, epsfig, axodraw