Standard Cosmology Delayed

Details Standard Cosmology Delayed Standard Cosmology Delayed

2011-06-30

arxiv.org/abs/1106.6231v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 3 figures, Revised with more elaborate discussions. Accepted for publication in JCAP

Scientific paper

The introduction of a delay in the Friedmann equation of cosmological evolution is shown to result in the very early universe undergoing the necessary accelerated expansion in the usual radiation (or matter) dominated phase. Occurring even without a violation of the strong energy condition, this expansion slows down naturally to go over to the decelerated phase, namely the standard Hubble expansion. This may obviate the need for a scalar field driven inflationary epoch.

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