By relaxing the unbiased-loss assumption in the CVOS model, the paper finds new asymptotic scaling solutions for current-carrying cosmic strings, some of which have no unbiased analog.
Evolution of cosmic superstring networks: a numerical simulation
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abstract
We study the formation and evolution of an interconnected string network in large-scale field-theory numerical simulations, both in flat spacetime and in expanding universe. The network consists of gauge U(1) strings of two different kinds and their bound states, arising due to an attractive interaction potential. We find that the network shows no tendency to ``freeze'' and appears to approach a scaling regime, with all characteristic lengths growing linearly with time. Bound strings constitute only a small fraction of the total string length in the network.
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Scaling solutions for current-carrying cosmic string networks. II. Biased solutions
By relaxing the unbiased-loss assumption in the CVOS model, the paper finds new asymptotic scaling solutions for current-carrying cosmic strings, some of which have no unbiased analog.