Generation of structure on a cosmic-string network

Details Generation of structure on a cosmic-string network Generation of structure on a cosmic-string network

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrvl..65.1705a&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 65, Oct. 1, 1990, p. 1705-1708.

Physics

22

Cosmology, Gravitational Waves, String Theory, Computerized Simulation, Differential Equations

Scientific paper

When cosmic strings cross and intercommute, four kinks are created. Here, the linear density of these kinks, K(t), in an expanding universe is calculated. After a period of rapid initial growth, K(t) approaches the scaling K(t) proportional to 1/t. However, due to the slow decay of kinks, the kink density is orders of magnitude larger than might be expected. Thus, it is predicted that a single horizon-length segment should have about 10 to the 6th kinks in the radiation-dominated era. This may explain the lack of scaling behavior in the formation of loops observed in numerical simulations.

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