Inflation, Microwave Background Anisotropy, and Open Universe Models

  • J. A. Frieman
Part of the International Astronomical Union/Union Astronomique Internationale book series (IAUS, volume 168)


The inflationary scenario for the very early universe has proven very attractive, because it can simultaneously solve a number of cosmological puzzles, such as the homogeneity of the Universe on scales exceeding the particle horizon at early times, the flatness or entropy problem, and the origin of density fluctuations for large-scale structure [1]. In this scenario, the observed Universe (roughly, the present Hubble volume) represents part of a homogeneous inflated region embedded in an inhomogeneous space-time. On scales beyond the size of this homogeneous patch, the initially inhomogeneous distribution of energy-momentum that existed prior to inflation is preserved, the scale of the inhomogeneities merely being stretched by the expansion.


Spatial Curvature Open Universe Observable Universe Inflationary Scenario Hubble Radius 
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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • J. A. Frieman
    • 1
  1. 1.Fermi National Accelerator LaboratoryNASA/Fermilab Astrophysics CenterBataviaUSA

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