The effect of kinematic constraints on multi-tension string network evolution

Details The effect of kinematic constraints on multi-tension string network evolution The effect of kinematic constraints on multi-tension string network evolution

2009-12-21

arxiv.org/abs/0912.4004v1

Phys.Rev.D81:063517,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 7 figures

Scientific paper

10.1103/PhysRevD.81.063517

We consider the evolution of a network of strings in an expanding universe, allowing for the formation of junctions between strings of different tensions. By explicitly including, in the velocity-dependent evolution equations for the network, kinematic constraints associated with the formation of Y-shaped string junctions, we show how they lead to scaling solutions in regimes where they would not otherwise be found, thereby extending the range of parameters which lead to scaling. By incorporating these constraints we are able to study their general behaviour for networks with cosmic superstring interaction rules, and predict the scaling densities expected by these networks.

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