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Journal Article

Generation of structure on a cosmic-string network

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Allen,  Bruce
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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prl65-1705.pdf
(Publisher version), 672KB

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Citation

Allen, B., & Caldwell, R. R. (1990). Generation of structure on a cosmic-string network. Physical Review Letters, 65(14), 1705-1708. doi:10.1103/PhysRevLett.65.1705.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5CF3-A
Abstract
When cosmic strings cross and intercommute, four kinks are created. We calculate the linear density of these kinks, K(t), in an expanding universe. After a period of rapid initial growth, K(t) approaches the scaling K(t)∝t-1. However, due to the slow decay of kinks, the kink density is orders of magnitude larger than one might expect. Thus, we predict that a single horizon-length segment should have ≊106 kinks in the radiation-dominated era. This may explain the lack of scaling behavior in the formation of loops observed in numerical simulations.