1998/09/10 by P. P. Avelino, Robert R. Caldwell, R. R. Caldwell +1 · 2 citations
Physics and Astronomy · #Astronomy #Astrophysics #Big Bang (financial markets) #Cold dark matter #Cosmic background radiation #Cosmic microwave background #Cosmic string #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Economics #Horizon #Inflation (cosmology) #Inflationary epoch #Metric expansion of space #Omega #Physics #Quantum mechanics #Solar and Space Plasma Dynamics #Spectral density #String (physics) #Theoretical physics #Universe #astro-ph
paper · pdf · doi:10.1103/physrevd.59.123509
published as Phys.Rev. D59 (1999) 123509 · 11 LaTeX pages with 3 eps figures
arxiv created 1998/09/10 · openalex publication_date 1999/05/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 \ensuremathΓ=\ensuremathΩ0h\ensuremath∼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.