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Friction domination with superconducting strings

1998; American Physical Society; Volume: 57; Issue: 2 Linguagem: Inglês

10.1103/physrevd.57.692

1538-4500

Konstantinos Dimopoulos, Anne-Christine Davis,

Black Holes and Theoretical Physics

We investigate the evolution of a superconducting string network with arbitrary, constant string current in the friction dominated regime. In the absence of an external magnetic field the network always reaches a scaling solution. However, for string current stronger than a critical value, it is different than the usual horizon scaling of the nonsuperconducting string case. In this case the friction domination era never ends. Whilst the superconducting string network can be much denser than usually assumed, it can never dominate the universe energy density. It can, however, influence the cosmic microwave background radiation and the formation of large scale structure. When embedded in a primordial magnetic field of sufficient strength, the network never reaches scaling and, thus, eventually dominates the universe evolution.