Global strings in five-dimensional supergravity

TL;DR

This paper demonstrates the existence of solitonic global cosmic string solutions in five-dimensional supergravity, revealing their mathematical structure and partial supersymmetry breaking effects.

Contribution

It introduces new solitonic solutions in five-dimensional supergravity that resemble stringy cosmic strings, with variable extra-dimensional parameters and supersymmetry breaking.

Findings

Existence of solitonic global cosmic strings in 5D supergravity

Mathematical similarity to stringy cosmic strings by Greene et al.

Partial supersymmetry breaking around the strings

Abstract

We show the existence of solitonic solutions of five-dimensional supergravity, which can be interpreted as global cosmic strings in our universe. They possess the same mathematical structure as the stringy cosmic strings studied by Greene, Shapere, Vafa and Yau, while the size of the extra space and the value of the extra-space component of the gauge field vary from place to place around the string in our model. We also show that supersymmetry is partially broken in the presence of the global strings.