Local cosmic strings from Pseudo-anomalous U(1)

TL;DR

This paper introduces local cosmic string solutions within a superstring-inspired model featuring a pseudo-anomalous U(1) gauge symmetry, highlighting their properties, formation, and phenomenological constraints.

Contribution

It presents a novel class of local cosmic strings arising from pseudo-anomalous U(1) symmetries in superstring models, analyzing their characteristics and constraints.

Findings

Strings have diverging energy per unit length logarithmically.

Coupling with axions does not prevent the strings from being local.

Phenomenological constraints limit string parameters.

Abstract

Local cosmic strings solutions are introduced in a model with a pseudo-anomalous U(1) gauge symmetry. Such a symmetry is present in many superstring compactification models. The coupling of those strings with the axion necessary in order to cancel the anomalies does not prevent them from being local, even though their energy per unit length is found to diverge logarithmically. We discuss briefly the formation of such strings and the phenomenological constraints that apply to their parameters.