Rates of neutrino conversion and decay in hot and dense QED plasma

Abstract

Using a real-time formalism of equilibrium and nonequilibrium quantum-field theory, we derive the reaction-rate formula for neutrino-conversion (ν → ν ) process and νν̄ ′ annihilation process, which take place in a hot and dense QED plasma with background (anti)neutrinos out of equilibrium. Also derived is the formula for the inverse processes to the above ones. Using the hard-thermal-loop resummation scheme, we include the contribution from the coherent processes. The decay/production of a neutrino causes an evolution of its spatial distribution. A scheme for dealing with this evolution is presented. For the case of isotropic ∗Electronic address: asida@yukawa.kyoto-u.ac.jp †Electronic address: niegawa@sci.osaka-cu.ac.jp ‡Electronic address: hozaki@sci.osaka-cu.ac.jp

Cite this paper

@inproceedings{Ozaki2001RatesON, title={Rates of neutrino conversion and decay in hot and dense QED plasma}, author={Hideaki Ozaki and Makoto Kubota}, year={2001} }