Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.159...39u&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 159, no. 1, Sept. 1989, p. 39-45.
Astronomy and Astrophysics
Astrophysics
2
Annihilation Reactions, Astronomical Models, Big Bang Cosmology, Plancks Constant, Quantum Theory, Universe
Scientific paper
Two models are presented of the Planck era in the Big Bang. The first of them starts from the state of an essentially cold and nonexpanding universe (assumed to be closed). It is shown that the conditions in the Planck era rendered the total annihilation of the matter with the Planck density absolutely necessary. The annihilation was, further, a necessary condition for the expansion of the post-Planck universe, which, by itself, also was a necessity. The hot stage of the Big Bang in the post-Planck era was, in fact, a necessary consequence resulting from the scheme. The second model is motivated by the weak points of the first one. It is concluded that, owing to the extreme physical conditions, the cosmic medium within the Planck era could only consist of ultrahighly energetic photons. Finally, it is proposed that the second model is to be preferred.
Ulrych Emil
Voracek Pavel
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