Fine Structure Constant in the Spacetime of a Cosmic String

TL;DR

This paper calculates how the presence of a cosmic string affects the fine structure constant, showing it decreases in such spacetime, supported by numerical analysis.

Contribution

It provides the first detailed calculation of the fine structure constant's variation in cosmic string spacetime, including numerical results.

Findings

Fine structure constant decreases near a cosmic string

Numerical results support the analytical calculation

Spacetime topology influences fundamental constants

Abstract

We calculate the fine structure constant in the spacetime of a cosmic string. In the presence of a cosmic string the value of the fine structure constant reduces. We also discuss on numerical results.