Horizon problem and inflation

Details Horizon problem and inflation Horizon problem and inflation

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987japa....8..275p&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 8, Dec. 1987, p. 275-280.

Astronomy and Astrophysics

Astrophysics

6

Astronomical Models, Cosmology, Universe, Expansion, Horizon, Integral Equations, Size (Dimensions), Time Response

Scientific paper

Issues related to the horizon problem in inflationary models are discussed. It is suggested that inflation can never produce the observable region of the universe from a single causally connected region, and that the whole of the observable universe can only be causally connected in horizon-free models. The theory that perturbations at some wavelengths can grow bigger than the horizon during the inflationary phase and reenter the horizon at a later stage is found to hold true if horizon is interpreted as inverse Hubble distance. The explanation of the isotropy of cosmic microwave background radiation in inflationary models is shown to involve a surprising degree of fine tuning.

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