Neutrino Processes with Hot Nuclei in Supernovae

TL;DR

This paper calculates neutrino-nucleus interaction cross sections at supernova conditions using advanced finite-temperature nuclear models, providing insights into neutrino processes in stellar explosions.

Contribution

It extends Skyrme-QRPA calculations to finite temperature using thermo field dynamics, enabling more accurate modeling of neutrino interactions with hot nuclei.

Findings

Cross sections for neutrino interactions with $^{56}$Fe and $^{82}$Ge are computed.

Thermal effects significantly influence neutrino-nucleus cross sections.

Results aid understanding of neutrino processes in supernovae environments.

Abstract

In this paper, we calculate cross sections for charged-current neutrino-nucleus processes occuring under presupernova conditions. To treat thermal effects we extend self-consistent Skyrme-QRPA calculations to finite temperature by using the formalism of thermo field dynamics. The numerical results are presented for the sample nuclei, $^{56}$Fe and $^{82}$Ge