Journal
PHYSICAL REVIEW D
Volume 81, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.063517
Keywords
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Funding
- Spanish National Research Council (CSIC) [FP7-PEOPLE-2007-4-3]
- Centre of Theoretical Cosmology, University of Cambridge
- STFC [ST/H008586/1, ST/F002998/1, ST/G000417/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002998/1, ST/G000417/1, ST/H008586/1] Funding Source: researchfish
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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 behavior for networks with cosmic superstring interaction rules, and predict the scaling densities expected by these networks.
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