Cosmic Vortons---Dark Matter from Cosmic Strings

C.J.A.P. Martins^{1, 2}, and E.P.S.~Shellard¹

¹ Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, U.K.
² Centro de Astrof\'{i}sica da Universidade do Porto, Rua do Campo Alegre 823, 4150 Porto, Portugal

A procedure allowing a rigourous analysis of the conditions required for vorton formation in Witten's superconducting model is briefly discussed. Using a model for the evolution of currents in superconducting strings we conjecture that string networks formed at the GUT phase transition should produce no vortons. On the other hand, a network formed at the electroweak scale can produce vortons accounting for up to $6\%$ of the critical density.

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Cosmic Vortons---Dark Matter from Cosmic Strings

C.J.A.P. Martins1, 2, and E.P.S.~Shellard1

1 Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, U.K. 2 Centro de Astrof\'{i}sica da Universidade do Porto, Rua do Campo Alegre 823, 4150 Porto, Portugal

C.J.A.P. Martins^{1, 2}, and E.P.S.~Shellard¹

¹ Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW, U.K.
² Centro de Astrof\'{i}sica da Universidade do Porto, Rua do Campo Alegre 823, 4150 Porto, Portugal