Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-08-21
Phys.Rev.Lett. 80 (1998) 2277-2280
Physics
High Energy Physics
High Energy Physics - Phenomenology
4pp RevTeX, 3 eps figures, clarifications and new results included, to be published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.80.2277
We present the results of a field theory simulation of networks of strings in the Abelian Higgs model. Starting from a random initial configuration we show that the resulting vortex tangle approaches a self-similar regime in which the length density of lines of zeros of $\phi$ reduces as $t^{-2}$. We demonstrate that the network loses energy directly into scalar and gauge radiation. These results support a recent claim that particle production, and not gravitational radiation, is the dominant energy loss mechanism for cosmic strings. This means that cosmic strings in Grand Unified Theories are severely constrained by high energy cosmic ray fluxes: either they are ruled out, or an implausibly small fraction of their energy ends up in quarks and leptons.
Antunes Nuno D.
Hindmarsh Mark
Vincent Graham
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