Comment to "Fine structure constant in the spacetime of a cosmic string"

TL;DR

This paper critiques a previous claim that a cosmic string universally reduces the fine structure constant, clarifying that the original conclusion applies only under specific conditions.

Contribution

It clarifies the limitations of prior results on the fine structure constant's behavior near cosmic strings, emphasizing the special circumstances involved.

Findings

The original reduction of the fine structure constant is condition-specific.

The conclusion does not hold universally for all cosmic string scenarios.

The paper highlights the importance of context in theoretical physics results.

Abstract

In the paper Phys. Lett. B614 (2005), 140-142, F. Nasseri shows that the values of the fine structure constant reduces due to the presence of a cosmic string. In this comment I want to point out that this conclusion is not completely correct in the sense that the result obtained is valid only in a very special situation.