Radial excitations of current-carrying vortices

Author(s)

Hartmann, Betti ; Michel, Florent ; Peter, Patrick

• Document type: Journal article
• Source: Physics Letters B; v. 767, p. 354-359, APR 10 2017.
• Web of Science Citations: 1

Abstract

We report on the existence of a new type of cosmic string solutions in the Witten model with U(1) x U(1) symmetry. These solutions are superconducting with radially excited condensates that exist for both gauged and ungauged currents. Our results suggest that these new configurations can be macroscopically stable, but microscopically unstable to radial perturbations. Nevertheless, they might have important consequences for the network evolution and particle emission. We discuss these effects and their possible signatures. We also comment on analogies with non-relativistic condensed matter systems where these solutions may be observable. (C) 2017 The Author(s). Published by Elsevier B.V. (AU)

• FAPESP's process: 15/02563-8 - Microscopic properties of cosmic strings and their observational signatures
• Grantee: Betti Hartmann
• Support Opportunities: Research Grants - Visiting Researcher Grant - International