# Neutrino currents in wakes of cosmic strings

## TL;DR

This paper explores how neutrino currents generated by cosmic strings can induce magnetic fields in the early universe's plasma through oscillatory neutrino densities and resulting electron currents.

## Contribution

It introduces a mechanism where neutrino currents around moving cosmic strings create density gradients and magnetic fields in the cosmic plasma.

## Key findings

- Neutrino currents depend on distance from the string and oscillate.
- Neutrino density gradients induce electron currents in plasma.
- Magnetic fields are generated in the wake of cosmic strings.

## Abstract

Neutrinos rotating around Abelian Higgs strings will generate a neutral current close to the string. As the string moves through the cosmic plasma, the velocity kick generated by the motion of the string will enhance the neutrino current in the wake region. The neutrino current density depends on its distance from the string and is oscillatory in nature. This leads to neutrino density gradients in the plasma. Such a flux of neutrinos with periodic density fluctuations will lead to electron currents in the plasma. The current will act like a cross-perturbation across the cosmic string wake. The perturbation as well as the high Reynolds number of the plasma will result in the generation of magnetic fields in the wake of the cosmic string.