Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-06-25
JCAP0711:021,2007
Physics
High Energy Physics
High Energy Physics - Theory
17 pages, 8 figures, JCAP style
Scientific paper
10.1088/1475-7516/2007/11/021
We investigate the behaviour of (p,q) string networks, focusing on two aspects: (1) modelling more realistic (p,q) string networks than the Z_N networks used so far and (2) investigating the effect of long-range interactions on the evolution of the network. We model the network with no long-range interactions using two sets of fields, complex scalars coupled to gauge fields, with a potential chosen such that the two types of strings will form bound states. This way we can model junctions of 3 strings with different tension; in Z_N models used so far in simulations all the strings have identical tensions. In order to introduce long-range interactions we also study a network in which one of the scalars forms global strings. We observe that in the absence of long-range interactions the formation of bound states has a significant influence on the evolution of the network. When long-range interactions are turned on the bound states are short-lived and have a minimal effect on the network evolution.
Rajantie Arttu
Sakellariadou Mairi
Stoica Horace
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