A New Description of Cosmic Strings in Brane World Scenario

TL;DR

This paper uses topological current theory to analyze cosmic strings in brane world scenarios, revealing flux quantization and charge screening phenomena within an effective Abelian Higgs model framework.

Contribution

It introduces a topological approach to describe cosmic strings in brane worlds, providing analytical proof of flux quantization and charge screening effects.

Findings

Magnetic flux of cosmic strings is quantized.

RR charge of cosmic strings is screened.

Topological current theory effectively describes brane world cosmic strings.

Abstract

In the light of $\phi$-mapping topological current theory, the structure of cosmic strings are obtained from the Abelian Higgs model, which is an effective description to the brane world cosmic string system. In this topological description of the cosmic string, combining the result of decomposition of U(1) gauge potential, we analytically reach the familiar conclusions that in the brane world scenario the magnetic flux of the cosmic string is quantized and the RR charge of it is screened.