Cosmological consequences of string-forming open inflation models

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.59.123509· OSTI ID:341449

Avelino, P P ^[1]; Caldwell, R R ^[2]; Martins, C J ^[3]

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1. Centro de Astrofisica, Universidade do Porto, Rua das Estrelas s/n, 4150 Porto (Portugal)
2. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)
3. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge CB3 9EW (United Kingdom)

We present a study of open inflation cosmological scenarios in which cosmic strings form between the two inflationary epochs. It is shown that in these models, strings are stretched outside the horizon due to the inflationary expansion, but must necessarily re-enter the horizon before the epoch of equal matter and radiation densities. We determine the linear power spectrum of cold dark matter perturbations in these hybrid models, finding good agreement with observations for values of {Gamma}={Omega}{sub 0}h{approximately}0.3 and comparable contributions from the active and passive sources to the cosmic microwave background. Finally, we briefly discuss other cosmological consequences of these models. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 341449
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 12 Vol. 59; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BACKGROUND RADIATION
COSMIC RADIATION
COSMOLOGICAL MODELS
COSMOLOGY
INFLATIONARY UNIVERSE
NONLUMINOUS MATTER
PERTURBATION THEORY
STRING MODELS