A practical model for cosmic (p,q) superstrings

TL;DR

This paper introduces a practical Abelian gauge symmetry model for cosmic (p,q) superstrings, demonstrating the stability of bound states and facilitating numerical modeling of cosmic superstrings.

Contribution

It presents a new Abelian gauge symmetry model that captures key features of cosmic (p,q) superstrings, enabling more feasible numerical simulations.

Findings

Bound states are stable against decay to lower winding strings.

The model provides a pragmatic approach for numerical modeling of cosmic superstrings.

Despite not satisfying a BPS bound, the defects share significant similarities with BPS states.

Abstract

We propose a model with a U(1)_A x U(1)_B gauge symmetry which contains topological strings carrying magnetic flux under each of the U(1)s. By calculating the tension of the first few low energy strings we show that bound states, containing flux under each of the U(1)s, are stable against decay to their constituents of lower winding number. As the model contains only Abelian gauge symmetries this model provides a pragmatic solution to the numerical modelling of cosmic-superstrings. Whilst these defects do not satisfy a BPS bound we argue that they bear sufficient similarities to warrant such a study.