Extending the velocity-dependent one-scale string evolution model

2000/03/30 by C. J. A. P. Martins, E. P. S. Shellard · 12 citations
Mathematics · Physics and Astronomy · #Ansatz #Astrophysics and Cosmic Phenomena #Classical mechanics #Cosmic string #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Geometry #Mathematical physics #Mathematics #Momentum (technical analysis) #Physics #Quantum mechanics #Scale (ratio) #Scaling #Statistical physics #String (physics) #Theoretical physics #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.65.043514

published as Phys.Rev.D65:043514,2002 · 16 pages, 6 figures, submitted to Phys. Rev. D

arxiv created 2000/03/30 · openalex publication_date 2002/01/28 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We provide a general overview of the velocity-dependent one-scale model for cosmic string evolution and discuss two further extensions to it. We introduce and justify a new ansatz for the momentum parameter k, and also incorporate the effect of radiation back reaction. We thus discuss the evolution of the basic large-scale features of cosmic string networks in all relevant cosmological scenarios, concentrating in particular on the ``scaling'' solutions relevant for each case. In a companion paper, we show, by comparing with numerical simulations, that this model provides an accurate description of the large-scale features of cosmic string networks.

Citations

• Cosmic strings in an open universe: Quantitative evolution and observational consequences

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