Instability of Axions and Photons In The Presence of Cosmic Strings

TL;DR

This paper investigates how cosmic strings with magnetic flux induce instabilities in axions and photons, potentially observable through gamma-ray bursts and axion emissions, ultimately leading to cosmic string evaporation.

Contribution

It reveals the instability of axions and photons caused by cosmic strings with magnetic flux and links this to observable astrophysical phenomena.

Findings

Instability strength depends on symmetry breaking scale.

Potential gamma-ray burst signatures from cosmic string effects.

Cosmic strings may evaporate due to these instabilities.

Abstract

We report that axions and photons exhibit instability in the presence of cosmic strings that are carrying magnetic flux in their core. The strength of the instability is determined by the symmetry breaking scale of the cosmic string theory. This result would be evident in gamma ray bursts and axions emanating from the cosmic string. These effects will eventually lead to evaporation of the cosmic string.