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Time evolution of the fields associated with a cosmic string

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Zeitschrift für Physik C Particles and Fields

Abstract

The time development of the fields associated with a straight cosmic string in the localU(1) model is studied numerically in an expanding universe. The effective potential is time dependent due to the cooling of the universe. After the spontaneous breaking of theU(1) symmetry the fields start to oscillate as the system tends towards the static state of the stable Nielsen-Olesen string. It is shown that energy flows out of the comoving cylinder in the form of electromagnetic waves. Due to Hubble damping and energy outflow the oscillation amplitudes decrease but static fields are not obtained without additional damping terms originating, e.g., from particle production.

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Authors and Affiliations

  1. Department of Theoretical Physics, University of Helsinki, Siltavuorenpenger 20 C, SF-00170, Helsinki, Finland

    K. J. Eskola

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  1. K. J. Eskola
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Eskola, K.J. Time evolution of the fields associated with a cosmic string. Z. Phys. C - Particles and Fields 46, 117–123 (1990). https://doi.org/10.1007/BF02440840

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  • DOI: https://doi.org/10.1007/BF02440840

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