Stable cosmic vortons in bosonic field theory
  Stable ring solutions supported by the angular momentum caused by
superconducting charge and current have been suggested to exist in the gauged
$U(1)\times U(1)$ field theory. We construct potentially cosmologically
relevant solutions using gradient flow for the first time and present the
strongest evidence to date that they are stable to axial and, more importantly,
non-axial perturbations. More importantly, we illustrate quantitative agreement
with semi-analytic predictions based on the thin string approximation which
validates worldsheet action approaches to their formation and evolution.
