Jena 2013 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 6: Klassische Allgemeine Relativitästheorie I

GR 6.2: Talk

Tuesday, February 26, 2013, 18:30–18:45, HS 6

Gravitating vortons as ring solitons in general relativity — Jutta Kunz, •Eugen Radu, and Bintoro Subagyo — Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany

The vortons are spinning vortex loops stabilized by the centrifugal force and were proposed more than 20 years ago in the context of the local U(1)xU(1) theory of superconducting cosmic strings of Witten. We present an explicit construction of gravitating vortons in four dimensional general relativity, as solutions of an elliptic boundary value problem. We also discuss their properties and determine their domain of existence. Similar to Q-balls, we shown that the vortons exist only in a limited frequency range. The coupling to gravity gives rise to a spiral-like frequency dependence of the mass and charge of the vortons.