Vorton Existence and Stability

We present the rst on rete eviden e for the lassi al stability of vortons, ir ular osmi string loops stabilized by the angular momentum of the harge and urrent trapped on the string. We begin by summarizing what is known about vorton solutions and, in parti ular, their analyti stability with respe t to a range of radial and nonradial perturbations. We then dis uss numeri al results of vorton simulations in a full 3D eld theory, that is, Witten's original bosoni super ondu ting string model with a modi ed potential term. For spe i parameter values, these simulations demonstrate the long-term stability of su iently large vorton solutions reated with an ellipti al initial ansatz.