Big bounce in the very early universe

Details Big bounce in the very early universe Big bounce in the very early universe

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...250...43b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 250, no. 1, Oct. 1991, p. 43-49.

Astronomy and Astrophysics

Astrophysics

16

Astronomical Models, Cosmology, Universe, Big Bang Cosmology, Expansion, Quantum Theory

Scientific paper

A cosmological model is discussed which replaces the Friedmann singularity in the very early universe by a de Sitter solution with a closed spherical space metric stretched by a quantum vacuum. This model contracts from past infinity to a minimum radius and then re-expands (Big Bounce). After passing the minimum, a phase transition is required which converts the quantum vacuum into the primordial relativistic matter. During this process, the exponential de Sitter expansion turns into a Friedmann-Lemaitre model. This model is compared with a similar singularity-free model proposed by Israelit & Rosen (1989), which starts from a cosmic egg at the Planck time with 'prematter' of Planck density.

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