Neutrino production of electron-positron pairs at excited Landau levels in a strong magnetic field

TL;DR

This paper analyzes neutrino-induced electron-positron pair production in strong magnetic fields, accounting for excited Landau levels, and calculates neutrino energy loss relevant to astrophysical phenomena like gamma-ray bursts.

Contribution

It introduces a method to evaluate neutrino pair production involving excited Landau levels in arbitrary magnetic field strengths, extending previous models that focused on ground levels.

Findings

Neutrino energy loss due to pair production is quantified.

The process is applicable to conditions near Kerr black hole accretion disks.

The method improves understanding of quantum processes in external magnetic fields.

Abstract

The process of neutrino production of electron positron pairs in a magnetic field of arbitrary strength, where electrons and positrons can be created in the states corresponding to excited Landau levels, is analysed. The mean value of the neutrino energy loss due to the process $\nu \to \nu e^- e^+$ is calculated. The result can be applied for calculating the efficiency of the electron-positron plasma production by neutrinos in the conditions of the Kerr black hole accretion disc considered by experts as the most possible source of a short cosmological gamma burst. The presented research can be also useful for further development of the calculation technic for an analysis of quantum processes in external active medium, and in part in the conditions of moderately strong magnetic field, when taking account of the ground Landau level appears to be insufficient.