Nuclear inelastic scattering effect in supernova neutrino spectra
Seminars
Low-Energy Nuclear Physics Seminar
(sectors No.1 and 2 of the scientific department of nuclear theory)
Date and Time: Friday, 12 February 2021, at 2:30 PM
Venue: Online conference in Zoom, Bogoliubov Laboratory of Theoretical Physics
Seminar topic: «Nuclear inelastic scattering effect in supernova neutrino spectra»
Speakers: V. N. Kondratyev, A. A. Dzhioev, A. I. Vdovin
Abstract:
The neutrino dynamics in magnetized hot and dense matter corresponding to supernova explosions is considered. The kinetic equation for a neutrino energy distribution function is obtained, taking into account inelastic scattering by nuclear particles. The transfer and diffusion components in an energy space are argued to dominate in the transport properties. It is shown that the transfer coefficient changes from positive to negative values when the neutrino energy exceeds four times the temperature. Effects for neutrino transport and spectra are discussed.