Realistic Equations of State for the Primeval Universe

Details Realistic Equations of State for the Primeval Universe Realistic Equations of State for the Primeval Universe

2008-01-04

arxiv.org/abs/0801.0705v2

Eur.Phys.J.C58:483-497,2008

Astronomy and Astrophysics

Astrophysics

32 pages, 5 figures. Citations added in this version. Accepted EPJC

Scientific paper

10.1140/epjc/s10052-008-0780-6

Early universe equations of state including realistic interactions between constituents are built up. Under certain reasonable assumptions, these equations are able to generate an inflationary regime prior to the nucleosynthesis period. The resulting accelerated expansion is intense enough to solve the flatness and horizon problems. In the cases of curvature parameter \kappa equal to 0 or +1, the model is able to avoid the initial singularity and offers a natural explanation for why the universe is in expansion.

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