Cosmological Consequences of String-forming Open Inflation Models

Details Cosmological Consequences of String-forming Open Inflation Models Cosmological Consequences of String-forming Open Inflation Models

1998-09-10

arxiv.org/abs/astro-ph/9809130v1

Phys.Rev. D59 (1999) 123509

Astronomy and Astrophysics

Astrophysics

11 LaTeX pages with 3 eps figures

Scientific paper

10.1103/PhysRevD.59.123509

We present a study of open inflation cosmological scenarios in which cosmic strings form betwen 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 power spectrum of cold dark matter perturbations in these hybrid models, finding good agreement with observations for values of $\Gamma=\Omega_0h\sim0.3$ and comparable contributions from the active and passive sources to the CMB. Finally, we briefly discuss other cosmological consequences of these models.

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