Cosmological evolution of cosmic strings with time-dependent tension

Details Cosmological evolution of cosmic strings with time-dependent tension Cosmological evolution of cosmic strings with time-dependent tension

2005-03-23

arxiv.org/abs/hep-ph/0503227v2

Phys.Rev. D72 (2005) 043533

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.72.043533

We discuss the cosmological evolution of cosmic strings with time-dependent tension. We show that, in the case that the tension changes as a power of time, the cosmic string network obeys the scaling solution: the characteristic scale of the string network grows with the time. But due to the time dependence of the tension, the ratio of the energy density of infinite strings to that of the background universe is {\it not} necessarily constant.

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