Cosmological evolution of cosmic strings with time-dependent tension

Journal Article · Mon Aug 15 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.043533· OSTI ID:20711333

Yamaguchi, Masahide ^[1]

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1. Department of Physics and Mathematics, Aoyama Gakuin University, Sagamihara 229-8558 (Japan)

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 not necessarily constant.

• OSTI ID: 20711333
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
ENERGY DENSITY
MATHEMATICAL SOLUTIONS
STRING MODELS
TIME DEPENDENCE
UNIVERSE