Gauge k-vortices

TL;DR

This paper investigates gauge vortices in models with non-canonical kinetic terms, revealing how an extra parameter influences vortex properties and potential cosmological implications like cosmic string formation.

Contribution

It extends previous work on global k-defects to include gauge fields, analyzing how non-canonical kinetic terms alter vortex characteristics and their cosmological relevance.

Findings

Introduction of a kinetic mass parameter affects vortex properties.

Non-canonical kinetic terms lead to different vortex solutions.

Potential impact on cosmic string formation in early universe.

Abstract

We consider gauge vortices in symmetry breaking models with a non-canonical kinetic term. This work extends our previous study on global topological k-defects (hep-th/0608071), including a gauge field. The model consists of a scalar field with a non-canonical kinetic term, while for the gauge field the standard form of its kinetic term is preserved. Topological defects arising in such models, k-vortices, may have quite different properties as compared to ``standard'' vortices. This happens because an additional dimensional parameter enters the Lagrangian for the considered model -- a ``kinetic'' mass. We briefly discuss possible consequences for cosmology, in particular, the formation of cosmic strings during phase transitions in the early universe and their properties.