Implications of cosmic strings with time-varying tension on CMB and large scale structure

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dc.creatorIchikawa, Kazuhide
dc.creatorTakahashi, Tomo
dc.creatorYamaguchi, Masahide
dc.date2006-06-28
dc.date.accessioned2026-07-07T10:25:02Z
dc.date.available2026-07-07T10:25:02Z
dc.descriptionWe investigate cosmological evolution and implications of cosmic strings with time-dependent tension. We derive basic equations of time development of the correlation length and the velocity of such strings, based on the one scale model. Then, we find that, in the case where the tension depends on some power of the cosmic time, cosmic strings with time-dependent tension goes into the scaling solution if the power is lower than a critical value. We also discuss cosmic microwave background anisotropy and matter power spectra produced by these strings. The constraints on their tensions from the Wilkinson microwave anisotropy probe (WMAP) three year data and Sloan digital sky survey (SDSS) data are also given.
dc.description17 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0606287
dc.identifierhttp://arxiv.org/abs/hep-ph/0606287
dc.identifierPhys.Rev.D74:063526,2006
dc.identifierdoi:10.1103/PhysRevD.74.063526
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176407
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleImplications of cosmic strings with time-varying tension on CMB and large scale structure
dc.typetext

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