2005/11/30 by Christophe Ringeval, Mairi Sakellariadou, Francois Bouchet +1 · 5 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Background radiation #COSMIC cancer database #Cosmic string #Cosmology #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Gravitational wave #Massless particle #Primordial fluctuations #Scaling #String (physics) #Universe #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2007/02/023
published as JCAP 0702:023,2007 · 12 pages, 4 figures, uses iopart. Improved statistics, numerical robustness discussed in details, references added, note added. Matches published version
arxiv created 2007/02/19 · openalex publication_date 2007/02/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The existence of a scaling evolution for cosmic string loops in an expanding universe is demonstrated for the first time by means of numerical simulations. In contrast with what is usually assumed, this result does not rely on any gravitational back reaction effect and has been observed for loops as small as a few thousandths the size of the horizon. We give the energy and number densities of expected cosmic string loops in both the radiation and matter eras. Moreover, we quantify previous claims on the influence of the network initial conditions and the formation of numerically unresolved loops by showing that they only concern a transient relaxation regime. Some cosmological consequences are discussed.